WO2020204372A1 - Safety catheter assembly - Google Patents
Safety catheter assembly Download PDFInfo
- Publication number
- WO2020204372A1 WO2020204372A1 PCT/KR2020/003155 KR2020003155W WO2020204372A1 WO 2020204372 A1 WO2020204372 A1 WO 2020204372A1 KR 2020003155 W KR2020003155 W KR 2020003155W WO 2020204372 A1 WO2020204372 A1 WO 2020204372A1
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- WIPO (PCT)
- Prior art keywords
- locking
- link
- housing
- needle
- hollow
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0618—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard
- A61M25/0625—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard with a permanent connection to the needle hub, e.g. a guiding rail, a locking mechanism or a guard advancement mechanism
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/065—Guide needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0208—Subcutaneous access sites for injecting or removing fluids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
- A61M2039/0258—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body for vascular access, e.g. blood stream access
Definitions
- the present invention relates to a safety catheter assembly in which there is no malfunction at all and significantly increases the convenience of operation by releasing and retreating the locking state of the needle hub while opening the locking link to the left and right by pulling the locking button back in a sliding manner.
- a vascular catheter for example an intravenous catheter, is used to administer a fluid such as saline, various drugs, and whole parenteral nutrients to a patient, or to draw blood from a patient.
- a fluid such as saline, various drugs, and whole parenteral nutrients
- the catheter assembly is for leaving a connector with a tube for a person to be treated, and provides convenience so that when a chemical solution is injected through an injection or the like, there is no need to newly penetrate the skin with a needle.
- the tube in order to insert the tube into the body of the person to be treated, the tube is inserted into the body of the person to be treated together with a separate guide needle, and then only the guide needle is removed by retreating.
- Patent Document 1 US Patent No. 6,090,078
- the conventional blood vessel access device 10 as shown in FIGS. 1 and 3, when the locking plate 36 and the circumferential groove 78 are aligned, the locking member 32 Is raised so that the rectangular opening 42 of the locking opening 40 is disposed inside the circumferential groove 78. Since the width of the rectangular opening 42 is narrower than the diameter of the distal catheter adapter 76, the introduction needle 60 and the catheter adapter 72 are held in a compressed state against the elastic force of the coil spring 69.
- the locking is released by pressing the trigger 34 exposed to the outside.
- the trigger 34 is The unlocking mechanism, which is easily pushed undesirably, can no longer be used if a malfunction occurs.
- the needle 61 Since the largest frictional force is acting on the component of the force in which the direction of the force that the locking plate 36 descends is at right angles to the direction of the force (elastic force) to be restored by the hollow hub 62, the needle 61 And after the hollow tube cannula 84 is inserted into a blood vessel, etc., when the trigger 34 is pressed to lower the locking plate 37, it must overcome the right-angled friction force and press the housing 20 itself to shake the blood vessel. There is a great risk of hurting them.
- Patent Document 2 Another conventional safety catheter assembly 10 is proposed as disclosed in Patent Document 2 ⁇ Korean Patent Publication No. 10-1707181 (US Patent Publication No. 2018-0243539) ⁇ .
- the fixing member 240 is separated from the first fixing hole 211 , By the restoring force of the elastic member 250, the fixing member 240 and the handle member 230 are retracted together. Thereafter, when the needle 220 is not exposed to the outside and is completely inserted into the housing 210, the fixing member 240 is inserted into the second fixing hole 212, and the retracted state of the handle member 230 is maintained. .
- Patent Document 2 since the fixing member 240 maintains a component of force in the direction perpendicular to the first fixing hole 211, the fixing member 240 is unintentionally removed when holding the housing 210 for a procedure. Pressing may cause a malfunction, and after the insertion of the blood vessel, it is possible to injure the blood vessel by shaking the housing 210 while trying to press the fixing member 240 with a large force.
- first and second fixing holes 211 and 212 are perforated in the housing 210, when the handle member 230 is retracted, there is a risk of leakage of blood entering the housing 210 or external There is a high risk of foreign substances entering the blood vessels from
- Patent Document 1 US Patent Publication No. 6,090,078
- Patent Document 2 Korean Patent Publication No. 10-1707181 (US Patent Publication No. 2018-0243539)
- the present invention was conceived to solve the above-described problem, eliminating the fear of malfunction due to a mechanism that pulls the locking button back in a sliding manner in the same direction as the retreating direction of the needle hub, and unlocking by opening the locking link in the circumferential direction. It is an object of the present invention to provide a safety catheter assembly capable of providing a safer medical environment from infections and contaminants by minimizing the shaking of the needle compared to the right angle to increase convenience through stable and smooth operation.
- the safety catheter assembly includes a hollow housing 310 having a housing cavity 311 penetrating back and forth, and installed at the rear side of the hollow housing 310, and the housing chamber ( A housing 300 including a cap housing 390 with 391; The catheter 400 installed on the front side of the hollow housing 310; A needle hollow hub 500 disposed inside the housing cavity 311; A coil spring 600 for retracting the needle hollow hub 500 into the chamber 391;
- the needle hollow hub 500 locked by the release of the compressed coil spring 600 includes a locking mechanism 700 to retreat into the housing chamber 391, and the locking mechanism 700 accommodates the link of the hollow housing 310 It is installed in the groove part 330 and slides backward while being installed in the locking rink 710 of the open cross section having the opening 715 cut in the front and rear direction, and the button mounting groove 350 of the hollow housing 310 It includes a locking button 730 to release the locking state of the needle hollow hub 500 by opening the locking link 710 to the left and right while passing through the opening 7
- an assembly inclined surface 710a inclined toward the inside is further formed on an inner edge of the rear surface of the locking link 710.
- a weight loss groove 717 is formed on the front side of the left and right vertical links 711, and the front and rear lengths of the left and right vertical links 711 ⁇ left and right upper links 713, 714 Is the front and rear length of ⁇ the front and rear length of the lower connecting link 712.
- the locking button 730 includes a pull button 731, a slide plate 733 formed on a lower surface of the pull button 731, and a slide plate 733.
- a pull button 731 including a wing-shaped protrusion 734 formed on the left and right sides of the slide plate 733, and an opening insertion piece 735 formed on the rear side of the slide plate 733, and the protrusion on the left and right side walls 351 of the button mounting groove 350
- a slot 353 is formed in which the 734 is slidable back and forth, and the protrusion 734 is made of a right-angled triangular jaw protrusion 734a and an inclined protrusion 734b, and the front of the slide plate 733
- a protruding plate 733a protruding further forward than the pull button 731 is formed on the outer circumferential surface of the assembly hole 360 of the hollow housing 310 while covering the upper surface of the protruding plate 733a while covering the catheter protection cap 800 This is more fitted and combined
- the locking button slides backwards and unlocks the locking link in the left and right directions in the locking state, so that it does not malfunction even if the locking button is pressed during the procedure.
- the locking is released while passing through the opening of the locking link, so that there is no need to forcefully pull, so the convenience of operation is very excellent.
- the locking link has the same shape as a link or a running track, and the left and right gaps occur when passing through the opening, the occupied space contacting the left and right side walls of the link receiving groove can be minimized, thereby making it compact.
- an inclined assembly inclined toward the inside on the inner edge of the rear surface of the locking link it serves as a guide that is easily inserted when the needle hollow hub is pushed in after the locking link is received and assembled in the locking receiving groove.
- a weight loss groove is formed on the front side of the left and right vertical links, and the lengths of the front and rear vertical links are lengthened in the order of the left and right vertical links ⁇ left and right upper links ⁇ lower connecting links, so that the left and right elasticity in the vicinity of the opening is more easily expanded.
- the protrusion is made of a chin protrusion and an inclined protrusion, the chin protrusion prevents the protrusion from being dislodged from the slot for the slot forward, and the inclined protrusion serves as a guide when assembling the locking button by forcefully inserting it into the button mounting groove.
- the protrusion plate 733a is covered while the catheter protection cap 800 is fitted to the outer circumferential surface of the assembly hole 360 of the hollow housing 310 as shown in FIG. 8 and at the same time the height of the inclined surface 731a of the pull button 731 And are arranged almost the same.
- the catheter protection cap is further fitted and coupled to the outer circumferential surface of the assembly hole of the hollow housing while covering the upper surface of the protruding plate, so that the position to pull the pull button back while the protruding plate 733a is pressed before the catheter protection cap 800 is removed. It is very convenient to handle. That is, even if an external force or impact such as opening or conveying is applied before the procedure is performed, a malfunction that is pulled back can be reliably prevented.
- 1 and 2 are longitudinal cross-sectional views before and after the needle is retracted as a conventional safety catheter assembly.
- 3 and 4 are cross-sectional views of a needle locking mechanism showing locking and unlocking positions taken along lines 3, 4-3, and 4 of FIG. 1;
- Figure 5 is a flow chart of the operation of another conventional safety catheter assembly.
- Figure 6 is an exploded perspective view showing a safety catheter assembly according to a preferred embodiment of the present invention.
- Figure 7 is an assembled perspective view of Figure 6
- FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 7;
- FIG. 9 is a cross-sectional view of FIG. 8 with the protective cap removed.
- FIG. 10 is a cross-sectional view of a state in which the needle hub of FIG. 9 is retracted.
- 11 and 12 are perspective views showing main parts of the locking mechanism.
- FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 8;
- 17 is a rear perspective view of the locking link.
- Figure 20 is a side view of Figure 18;
- 21 to 23 are a flow chart of the unlocking operation of the locking button and the locking link.
- FIG. 6 is an exploded perspective view showing a safety catheter assembly according to a preferred embodiment of the present invention
- FIG. 7 is an assembled perspective view of FIG. 6
- FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 7
- FIG. 9 is 8 is a cross-sectional view with the protective cap removed
- FIG. 10 is a cross-sectional view of a state in which the needle hub of FIG. 9 is retracted
- FIGS. 11 and 12 are perspective views showing main parts of the locking mechanism
- FIG. 13 is 13- A cross-sectional view taken along line 13,
- FIGS. 14, 15 and 16 are a front perspective view, a front view, and a rear view of the locking link
- FIG. 17 is a rear perspective view of the locking link
- FIGS. 18 and 19 are top surfaces of the locking button
- FIG. 20 is a side view of FIG. 18, and FIGS. 21 to 23 are flowcharts illustrating an unlocking operation of the locking button and the locking link.
- the safety catheter assembly 200 includes a housing 300 having a housing cavity 311 and a chamber 391 therein, and a front side of the housing 300.
- the catheter 400 to be installed, the needle hollow hub 500 arranged inside the housing 300, the coil spring 600 for retracting the needle hollow hub 500 into the chamber 391, and a compressed coil spring It includes a locking mechanism 700 that retracts the needle hollow hub 500 into the housing chamber 391 upon release of 600.
- the housing 300 includes a hollow housing 310 having a housing cavity 311 penetrating back and forth, and a cap housing 390 installed at the rear side of the hollow housing 310 and having a housing chamber 391.
- a needle hollow hub 500 is disposed in the cavity 311 of the hollow housing 310.
- the outer circumferential surface of the hollow housing 310 has a square shape unlike the pipe-shaped inner circumferential surface, so that it is easy for the operator to hold it by hand.
- the cap housing 390 has a housing chamber 391 in the shape of a closed tube.
- cap housing 390 is inserted into the outer circumferential surface of the cap housing connection pipe 313 extending from the rear side of the hollow housing 310 to be sealed and assembled to prevent leakage and separation.
- a fitting groove 313a is formed on the outer circumferential surface of the cap housing connector 313, and a fitting protrusion 390a that is fitted into the fitting groove 313a is formed at the front end of the cap housing 390. Is formed.
- the catheter 400 includes a catheter tube 410 inserted into a blood vessel or the like, and a catheter hollow hub 430 that holds the catheter tube 410.
- the catheter hollow hub 430 is inserted into the outer peripheral surface of the catheter connector 312 extending from the front side of the hollow housing 310.
- the needle hollow hub 500 includes a needle 510 inserted into a blood vessel or the like, and a needle hollow holder 530 that holds the needle 510.
- the needle 510 is inserted into the catheter tube 410 so that the sharp needle tip 511 is exposed to the outside.
- a locking flange 550 having a large diameter is formed on the outer peripheral surface of the end of the hollow needle holder 530.
- the locking flange 550 is preferably similar to the inner hollow shape of the locking link 710.
- the locking flange 550 has a shape such as a link or a running track.
- a membrane 570 is provided on the locking flange 550 to function as an air filter vent to prevent leakage of blood and body fluid.
- the hollow housing 310 and the needle hollow holder 530 allow the operator (medical practitioner) to accurately puncture blood vessels (to collect liquid or cells or tissues from the body by stabbing a needle in the human body), the visibility of blood flashback It is desirable to use a transparent material to increase the level.
- the coil spring 600 is disposed between the locking projection 314 of the hollow housing 310 and the locking flange 550.
- the locking mechanism 700 is a mechanism for retracting the needle hollow hub 500 back by maintaining (locking) or releasing (unlocking) the coil spring 600 in a compressed state.
- the locking mechanism 700 includes a locking link 710 that locks the needle hollow hub 500, and the locking link 710 opens when sliding backward.
- the needle hollow hub 500 includes a locking button 730 to be retracted.
- the locking link 710 has a shape of a hollow open cross-section (a hollow open cross-section in which a part of the hollow closed cross-section is cut off) installed inside the hollow housing 310.
- the locking link 710 is a link (stadium track) shape of a hollow open cross-section when viewed from the front as shown in FIGS. 14 to 17, and the left and right vertical links 711 and the left and right vertical links 711 facing each other.
- the upper left and right links 713 and 714 extending from the upper side of the left and right vertical links 711 toward the inside so that an opening 715 which is an incision at the center is formed.
- a locking locking projection 716 formed at the rear of the lower surface of the upper left and right links 713, 714.
- the front and rear lengths w3 of the left and right vertical links 711 are made thin so that the left and right elasticity is good. Let's do it.
- front and rear length w2 of the left and right upper links 713 and 714 is made thinner than the front and rear length w1 of the lower connection link 712.
- the front and rear lengths of the left and right vertical links 711 ⁇ the front and rear lengths of the left and right upper links 713 and 714 ⁇ the front and rear lengths of the lower connecting links 712 (or thicker), so that they are fitted in the link receiving groove 330 It facilitates the elastic spread of the left and right vertical links 711 and the left and right upper links 713 and 714 with respect to the lower connection link 712.
- the link (land track) shape or the left and right vertical links 711 are vertically opened, they are prevented from reaching the left and right side walls 333 of the link receiving groove 330 formed in the hollow housing 310 and not sufficiently open. And it can be made compact in size. For example, in the case of a C-shaped link, if it opens and then touches the left and right side walls first and does not open anymore, the left and right side walls of the link receiving groove must be wider. In this case, the size of the hollow housing increases due to the expansion of the occupied space.
- an assembly inclined surface 710a inclined (chamfered) toward the inside is formed at the inner edge of the rear surface of the locking link 710.
- the assembly inclined surface 710a is very similar to a funnel shape whose diameter decreases from the rear to the front.
- the inclined assembly 710a serves as a guide surface when the locking flange 550 is pushed forward in a contacted state and assembled.
- the opening 715 extends from the rear end of the funnel-shaped introduction guide opening 715a and the funnel-shaped introduction guide part 715a, which gradually narrows toward the rear when viewed from the top. It consists of a straight opening 715b.
- the locking link 710 is inserted and received in the link receiving groove 330 formed in the transverse direction of the hollow housing 310 as shown in FIGS. 11 to 13.
- the link receiving groove 330 has a seating groove 331 in which the lower connection link 712 is seated, and the left and right side walls 333 facing each other with a space (s) with the left and right vertical links 711. ).
- the space s is an allowable space in which the left and right vertical links 711 and the left and right upper links 713 and 714 can be opened.
- the locking button 730 includes a pull button 731, a slide plate 733 formed on the lower surface of the pull button 731, and an opening insertion piece 735 formed on the rear side of the slide plate 733. Include.
- Wing-shaped protrusions 734 are formed on the left and right sides of the slide plate 733.
- a button mounting groove 350 into which the locking button 730 is slidably mounted is formed on the upper surface of the hollow housing 310.
- Button mounting groove 350 is composed of a front button mounting groove (350a) and a rear button mounting groove (350b) around the link receiving groove (330).
- Slots 353 are formed in the left and right side walls 351 of the front button mounting groove 350a in the front and rear longitudinal direction.
- the protrusion 734 is slidably fitted in the slot 353.
- the protrusion 734 has an isosceles triangle shape and includes a jaw protrusion 734a and an inclined protrusion 734b.
- the jaw protrusion 734a is a right-angled locking jaw that prevents the protrusion 734 from being separated from the slot 353 forward.
- the inclined protrusion 734b serves as a guide when assembling the locking button 730 by forcefully fitting it into the button mounting groove 350.
- the opening insertion piece 735 is guided to the funnel-shaped introduction guide opening 715a and disposed on the straight opening 715b, the non-operating opening insertion piece 735a, and the straight opening 715b. It consists of an operation opening insertion piece (735b) to open the locking link (710) while passing through.
- the width of the straight opening 715b is smaller than the width of the operating opening insertion piece 735b, and a funnel-shaped inclined surface 735c is formed between the operating opening insertion piece 735b and the non-operating opening insertion piece 735a. Is preferable.
- This opening inserting piece 735 is opened to the left and right while passing through the opening 715 of the locking link 710 while the locking button 730 is pulled back as shown in FIGS. 21 to 23, so that the locking flange 550 as shown in FIG. 23 As shown in FIG. 10, while being away from the locking locking jaw 716, it is retracted back by the elastic force.
- the pull button 731 is disposed on the top of the button mounting groove 350, and has an inclined surface 731a that is inclined toward one upper limit with respect to a right angle to be easily pulled back by holding it with an index finger on its front side.
- the slide plate 733 has a protruding plate 733a protruding further forward than the inclined surface 731a of the pull button 731.
- This protruding plate 733a is covered while being fitted with the catheter protection cap 800 on the outer circumferential surface of the assembly hole 360 of the hollow housing 310 as shown in FIG. 8 and is also equal to the height of the inclined surface 731a of the pull button 731 They are arranged almost the same.
- the protruding plate 733a is pressed and there is no position to pull the pull button 731 back, so that the locked state is stably maintained.
- it is very convenient to handle because it can reliably prevent a malfunction that is pulled back even if an external force or impact such as transport or the like is applied before the treatment is opened.
- the opening insertion piece allowable groove 355 is a non-operating opening insertion allowable groove (355a) and an actuating opening insertion allowable groove (355b) to allow the non-operating opening insertion piece (735a) and the working opening insertion piece (735b) to enter. Done.
- the locking button 730 is pulled back to release the locking state of the locking flange 550 by opening the locking link 710, there is no fear of malfunction caused by pressing the button during the procedure. Since it is a structure that is pulled out from side to side, it has relatively less force to pull back, so the operation is very convenient.
- 311 housing cavity
- 330 link receiving groove
- 331 seating groove
- 333 left and right side walls
- 700 locking mechanism
- 710 locking link (locking rink)
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Abstract
The present invention relates to a safety catheter assembly, which releases a locked state of a needle hub and retracts same while pulling a locking button back in a sliding manner so as to horizontally open locking links, thereby completely preventing malfunctions and remarkably increasing operation convenience.
Description
본 발명은 로킹 버튼을 슬라이딩 방식으로 뒤로 당겨 로킹 링크를 좌우로 벌리면서 니들 허브의 로킹 상태를 해제 후퇴시킴으로써 오작동이 전혀 없고 작동의 편리성을 현저히 증가시킨 안전 카테터 조립체에 관한 것이다. The present invention relates to a safety catheter assembly in which there is no malfunction at all and significantly increases the convenience of operation by releasing and retreating the locking state of the needle hub while opening the locking link to the left and right by pulling the locking button back in a sliding manner.
일반적으로 혈관 카테터, 예를 들어, 정맥 카테터(intravenous catheter)는 환자에게 식염수, 여러 약제, 및 전체적인 비경구 투여 영양제와 같은 유동체를 투여하거나, 환자로부터 채혈을 하는데 사용된다.In general, a vascular catheter, for example an intravenous catheter, is used to administer a fluid such as saline, various drugs, and whole parenteral nutrients to a patient, or to draw blood from a patient.
카테터 조립체는 피시술자에 대해 튜브가 형성된 커넥터를 남겨두기 위한 것으로, 이후 주사 등을 통한 약액 주입시 새롭게 피부를 바늘로 관통할 필요가 없도록 편리함을 제공한다.The catheter assembly is for leaving a connector with a tube for a person to be treated, and provides convenience so that when a chemical solution is injected through an injection or the like, there is no need to newly penetrate the skin with a needle.
이러한 카테터 조립체는 튜브를 피시술자의 체내에 삽입하기 위해, 별도의 유도 바늘과 함께 튜브를 피시술자의 체내에 삽입하고, 이후 유도 바늘만을 후퇴하여 제거하게 된다.In this catheter assembly, in order to insert the tube into the body of the person to be treated, the tube is inserted into the body of the person to be treated together with a separate guide needle, and then only the guide needle is removed by retreating.
한편, 유도 바늘을 제거하는 과정에서 시술자 또는 피시술자가 유도 바늘에 의해 자상을 입을 염려가 있고, 이를 통한 감염 등의 문제가 발생할 수 있다.On the other hand, in the process of removing the induction needle, there is a concern that the operator or the person to be treated may be cut by the induction needle, and problems such as infection may occur.
이를 해결하기 위한 종래의 혈관 접근 기기(10)로서 특허문헌 1(미국특허 제6,090,078호)에 개시된 것이 제안되어 있다. As a conventional vascular access device 10 for solving this, it is proposed that disclosed in Patent Document 1 (US Patent No. 6,090,078).
도 1 내지 도 4를 참조하면, 종래의 혈관 접근 기기(10)는 도 1 및 도 3에 도시한 바와 같이, 로킹 플레이트(36)와 원주방향 홈(78)이 정렬되면, 로킹 부재(32)는 상승되어 로킹 개구(40)의 직사각형 개구부(42)가 원주방향 홈(78) 내부에 배치된다. 직사각형 개구부(42)의 폭이 말단 카테터 어댑터(76)의 직경보다 더 좁기 때문에, 도입 니들(60)과 카테터 어댑터(72)는 코일 스프링(69)의 탄성력에 대해 압축된 상태로 홀딩되게 된다. 1 to 4, the conventional blood vessel access device 10, as shown in FIGS. 1 and 3, when the locking plate 36 and the circumferential groove 78 are aligned, the locking member 32 Is raised so that the rectangular opening 42 of the locking opening 40 is disposed inside the circumferential groove 78. Since the width of the rectangular opening 42 is narrower than the diameter of the distal catheter adapter 76, the introduction needle 60 and the catheter adapter 72 are held in a compressed state against the elastic force of the coil spring 69.
도 1 및 도 3과 같이 압축된 상태로 홀딩 된 후, 도 2 및 도 4와 같이 시술자가 트리거(34)를 누르면 로킹 플레이트(36)는 아래로 내려가서 로킹 개구(40)의 원형 개구부(41)에 카테터 어댑터(72)가 정렬하게 된다. 원형 개구부(41)의 직경은 카테터 어댑터(72)의 직경보다 더 크기 때문에 스프링(69)의 탄성력은 로킹 플레이트(36)와 허브(62)의 솔더(68)에 대해 저항하지 않게 된다. 따라서, 스프링(69)은 허브(62)를 가압해서 도입 니들(60)이 하우징 캐비티(22) 내로 후퇴시킨다. After being held in a compressed state as shown in FIGS. 1 and 3, when the operator presses the trigger 34 as shown in FIGS. 2 and 4, the locking plate 36 goes down and the circular opening 41 of the locking opening 40 ), the catheter adapter 72 is aligned. Since the diameter of the circular opening 41 is larger than the diameter of the catheter adapter 72, the elastic force of the spring 69 does not resist the solder 68 of the locking plate 36 and the hub 62. Accordingly, the spring 69 presses the hub 62 so that the introduction needle 60 retracts into the housing cavity 22.
그러나, 특허문헌 1에서는 외부로 노출된 트리거(34)를 누르는 방식으로 로킹을 해제하는데, 시술자가 시술 과정중 하우징(20)을 잡고 카테터 어댑터(72)를 피부에 삽입할 때 트리거(34)가 원치않게 쉽게 눌리는 언로킹 메커니즘으로 오작동이 생기면 더는 사용할 수 없게 된다. However, in Patent Document 1, the locking is released by pressing the trigger 34 exposed to the outside. When the operator holds the housing 20 during the procedure and inserts the catheter adapter 72 into the skin, the trigger 34 is The unlocking mechanism, which is easily pushed undesirably, can no longer be used if a malfunction occurs.
또한, 중공 허브(62)가 복원하려는 힘의 방향(탄성력)에 대해 로킹 플레이트(36)가 내려가는 힘의 방향이 직각으로 이루진 힘의 성분은 가장 큰 마찰력이 작용하고 있기 때문에, 니들(61)과 중공 튜브 캐뉼라(84)가 혈관 등에 삽입된 후 트리거(34)를 가압하여 로킹 플레이트(37)를 아래로 내리려고 할 때 직각의 마찰력을 이기고 눌러야 해서 잡고 있는 하우징(20) 자체가 흔들려서 혈관을 다치게 할 우려가 매우 크다. In addition, since the largest frictional force is acting on the component of the force in which the direction of the force that the locking plate 36 descends is at right angles to the direction of the force (elastic force) to be restored by the hollow hub 62, the needle 61 And after the hollow tube cannula 84 is inserted into a blood vessel, etc., when the trigger 34 is pressed to lower the locking plate 37, it must overcome the right-angled friction force and press the housing 20 itself to shake the blood vessel. There is a great risk of hurting them.
다른 종래의 안전 카테터 조립체(10)로는 특허문헌 2{한국등록특허공보 제10-1707181호(미국특허공개공보 제2018-0243539호)}에 개시된 것이 제안되어 있다. Another conventional safety catheter assembly 10 is proposed as disclosed in Patent Document 2 {Korean Patent Publication No. 10-1707181 (US Patent Publication No. 2018-0243539)}.
도 5를 참조하면, 다른 종래의 안전 카테터 조립체(10)는 카테터 시술 시, 시술자가 핸들부재(230)를 전진시키면, 탄성부재(250)는 압축되고, 고정부재(240)가 전진하게 된다. 이때, 바늘(220)이 카테터(100) 외부로 노출되면, 고정부재(240)는 제1 고정홀(211)에 삽입되고, 핸들부재(230)의 전진 상태가 유지된다. Referring to FIG. 5, in another conventional safety catheter assembly 10, when the operator advances the handle member 230 during catheter treatment, the elastic member 250 is compressed and the fixing member 240 is advanced. At this time, when the needle 220 is exposed to the outside of the catheter 100, the fixing member 240 is inserted into the first fixing hole 211, and the advanced state of the handle member 230 is maintained.
한편, 카테터(100)를 피시술자에게 삽입시킨 후, 시술자가 제1 고정홀(211)에 삽입된 고정부재(240)를 누르게 되면, 고정부재(240)는 제1 고정홀(211)로부터 분리되고, 탄성부재(250)의 복원력에 의하여, 고정부재(240) 및 핸들부재(230)는 함께 후퇴된다. 이후, 바늘(220)이 외부로 노출되지 않고 하우징(210) 내부에 완전히 삽입되면, 고정부재(240)는 제2 고정홀(212)에 삽입되며, 핸들부재(230)의 후퇴 상태가 유지된다.On the other hand, after inserting the catheter 100 into the person to be treated, when the operator presses the fixing member 240 inserted into the first fixing hole 211, the fixing member 240 is separated from the first fixing hole 211 , By the restoring force of the elastic member 250, the fixing member 240 and the handle member 230 are retracted together. Thereafter, when the needle 220 is not exposed to the outside and is completely inserted into the housing 210, the fixing member 240 is inserted into the second fixing hole 212, and the retracted state of the handle member 230 is maintained. .
그러나, 특허문헌 2도 고정부재(240)가 제1고정홀(211)에 직각방향으로 힘의 성분을 유지하고 있기 때문에, 시술하려고 하우징(210)을 잡을 때 의도치 않게 고정부재(240)를 눌러서 오작동시킬 수 있고, 혈관 삽입 후 큰 힘으로 고정부재(240)를 누르려다 하우징(210)의 흔들림으로 혈관을 다치게 할 수 있다. However, in Patent Document 2, since the fixing member 240 maintains a component of force in the direction perpendicular to the first fixing hole 211, the fixing member 240 is unintentionally removed when holding the housing 210 for a procedure. Pressing may cause a malfunction, and after the insertion of the blood vessel, it is possible to injure the blood vessel by shaking the housing 210 while trying to press the fixing member 240 with a large force.
또한, 제1,2고정홀(211)(212)이 하우징(210)에 천공 형성되어 있어서, 핸들부재(230)가 후퇴될 때 하우징(210) 내부로 들어오는 혈액 등이 누수될 우려가 있거나 외부로부터 혈관 내로 이물질이 들어갈 우려가 크다.In addition, since the first and second fixing holes 211 and 212 are perforated in the housing 210, when the handle member 230 is retracted, there is a risk of leakage of blood entering the housing 210 or external There is a high risk of foreign substances entering the blood vessels from
[선행기술문헌][Prior technical literature]
[특허문헌][Patent Literature]
(특허문헌 1) 미국특허공보 제6,090,078호(Patent Document 1) US Patent Publication No. 6,090,078
(특허문헌 2) 한국등록특허공보 제10-1707181호(미국특허공개공보 제2018-0243539호)(Patent Document 2) Korean Patent Publication No. 10-1707181 (US Patent Publication No. 2018-0243539)
본 발명은 전술한 문제를 해결하기 위하여 안출된 것으로, 니들 허브의 후퇴방향과 같은 방향으로 로킹 버튼을 슬라이딩 방식으로 뒤로 당기는 기구로 인해 오작동의 우려를 없애고, 로킹 링크를 원주방향으로 벌려 로킹을 해제하는 기구로 인해 직각에 비해 니들의 흔들림을 최소화하여 안정적이고 원활한 작동으로 편리성을 높여서 감염 및 오염원으로부터 더욱 안전한 의료 환경을 제공할 수 있는 안전 카테터 조립체를 제공하는 것을 목적으로 한다.The present invention was conceived to solve the above-described problem, eliminating the fear of malfunction due to a mechanism that pulls the locking button back in a sliding manner in the same direction as the retreating direction of the needle hub, and unlocking by opening the locking link in the circumferential direction. It is an object of the present invention to provide a safety catheter assembly capable of providing a safer medical environment from infections and contaminants by minimizing the shaking of the needle compared to the right angle to increase convenience through stable and smooth operation.
전술한 목적을 달성하기 위하여, 본 발명의 청구항 1에 기재된 안전 카테터 조립체는, 전후로 관통한 하우징 공동(311)을 갖는 중공 하우징(310)과, 중공 하우징(310)의 후측에 설치되며 하우징 챔버(391)를 갖는 캡 하우징(390)을 포함하는 하우징(300); 중공 하우징(310)의 전측에 설치되는 카테터(400); 하우징 공동(311)의 내부에 배치되는 니들 중공 허브(500); 니들 중공 허브(500)를 챔버(391) 내로 후퇴시키는 코일 스프링(600); 압축된 코일 스프링(600)의 해제로 로킹된 니들 중공 허브(500)가 하우징 챔버(391) 내로 후퇴시키는 로킹 기구(700)를 포함하되, 로킹 기구(700)는 중공 하우징(310)의 링크수용홈부(330)에 설치되며 전후방향으로 절개된 개구(715)를 갖는 개단면의 로킹 링크(locking rink)(710)와, 중공 하우징(310)의 버튼 장착홈(350)에 설치된 채 뒤로 슬라이딩되면서 개구(715)를 통과하면서 로킹 링크(710)를 좌우로 벌려 니들 중공 허브(500)의 로킹 상태를 해제시키는 로킹 버튼(730)을 포함하되, 로킹 링크(710)는 서로 마주보는 좌우측 수직링크(711)와, 좌우측 수직링크(711)의 하측을 연결하는 하측 연결 링크(712)와, 중심에 개구(715)가 형성되게 좌우측 수직링크(711)의 상측 각각에서 내측을 향해 연장되는 좌우 상측 링크(713)(714)와, 좌우 상측 링크(713)(714)의 하면 후방에 형성되어 니들 중공 허브(500)의 로킹 플랜지(550)가 걸리는 로킹 걸림턱(716)을 포함하고, 링크수용홈부(330)는 하측 연결 링크(712)가 안착되는 안착홈(331)과, 좌우측 수직링크(711)와 공간(s)을 두고 마주하는 좌우 측벽(333)을 포함한다. In order to achieve the above object, the safety catheter assembly according to claim 1 of the present invention includes a hollow housing 310 having a housing cavity 311 penetrating back and forth, and installed at the rear side of the hollow housing 310, and the housing chamber ( A housing 300 including a cap housing 390 with 391; The catheter 400 installed on the front side of the hollow housing 310; A needle hollow hub 500 disposed inside the housing cavity 311; A coil spring 600 for retracting the needle hollow hub 500 into the chamber 391; The needle hollow hub 500 locked by the release of the compressed coil spring 600 includes a locking mechanism 700 to retreat into the housing chamber 391, and the locking mechanism 700 accommodates the link of the hollow housing 310 It is installed in the groove part 330 and slides backward while being installed in the locking rink 710 of the open cross section having the opening 715 cut in the front and rear direction, and the button mounting groove 350 of the hollow housing 310 It includes a locking button 730 to release the locking state of the needle hollow hub 500 by opening the locking link 710 to the left and right while passing through the opening 715, the locking link 710 is the left and right vertical links facing each other ( 711), and a lower connection link 712 that connects the lower side of the left and right vertical links 711, and the left and right upper links extending from the upper side of the left and right vertical links 711 toward the inside so that an opening 715 is formed in the center (713) (714) and, it is formed at the rear of the lower surface of the left and right upper links (713, 714), including a locking flange (550) of the needle hollow hub 500, including a locking hook 716, the link receiving groove 330 includes a seating groove 331 in which the lower connection link 712 is seated, and left and right side walls 333 facing each other with a left and right vertical link 711 and a space (s).
본 발명의 청구항 2에 기재된 안전 카테터 조립체에 있어서, 로킹 링크(710)의 배면 내측 가장자리에는 내측을 향하게 경사진 조립 경사면(710a)이 더 형성되어 있다. In the safety catheter assembly according to claim 2 of the present invention, an assembly inclined surface 710a inclined toward the inside is further formed on an inner edge of the rear surface of the locking link 710.
본 발명의 청구항 3에 기재된 안전 카테터 조립체에 있어서, 좌우측 수직링크(711)의 전면에는 살빼기홈(717)이 형성되고, 좌우측 수직링크(711)의 전후 길이<좌우 상측 링크(713)(714)의 전후 길이<하측 연결 링크(712)의 전후 길이이다.In the safety catheter assembly according to claim 3 of the present invention, a weight loss groove 717 is formed on the front side of the left and right vertical links 711, and the front and rear lengths of the left and right vertical links 711 <left and right upper links 713, 714 Is the front and rear length of <the front and rear length of the lower connecting link 712.
본 발명의 청구항 4에 기재된 안전 카테터 조립체에 있어서, 로킹 버튼(730)은 풀(pull) 버튼(731)과, 풀 버튼(731)의 하면에 형성되는 슬라이드 판(733)과, 슬라이드 판(733)의 좌우 측면에 형성되는 윙 형태의 돌기(734)와, 슬라이드 판(733)의 후측에 형성되는 개구삽입편(735)을 포함하고, 버튼 장착홈(350)의 좌우 측벽(351)에는 돌기(734)가 전후 슬라이딩 가능하게 끼워지는 슬롯용 홈(353)이 형성되되, 돌기(734)는 직각삼각형의 턱돌기(734a)와 경사돌기(734b)로 이루어지고, 슬라이드 판(733)의 전방에는 풀 버튼(731)보다 앞으로 더 돌출한 돌출판(733a)이 형성되고, 중공 하우징(310)의 조립구(360)의 외주면에는 돌출판(733a)의 상면을 덮은 채 카테터 보호 캡(800)이 더 끼워져 결합된다.In the safety catheter assembly according to claim 4 of the present invention, the locking button 730 includes a pull button 731, a slide plate 733 formed on a lower surface of the pull button 731, and a slide plate 733. ), including a wing-shaped protrusion 734 formed on the left and right sides of the slide plate 733, and an opening insertion piece 735 formed on the rear side of the slide plate 733, and the protrusion on the left and right side walls 351 of the button mounting groove 350 A slot 353 is formed in which the 734 is slidable back and forth, and the protrusion 734 is made of a right-angled triangular jaw protrusion 734a and an inclined protrusion 734b, and the front of the slide plate 733 A protruding plate 733a protruding further forward than the pull button 731 is formed on the outer circumferential surface of the assembly hole 360 of the hollow housing 310 while covering the upper surface of the protruding plate 733a while covering the catheter protection cap 800 This is more fitted and combined.
본 발명에 따르면 다음과 같은 효과가 있다. According to the present invention, there are the following effects.
니들 중공 허브가 길이방향에 대해 직각방향으로 로킹 링크를 가한 상태로 로킹상태에서 로킹 버튼이 뒤로 슬라이딩 당겨 로킹 링크의 좌우방향으로 벌려 언로킹시킴으로써, 시술 중에 로킹 버튼을 눌러도 오작동이 되지 않고, 로킹 버튼이 로킹 링크의 개구를 통과시키면서 로킹이 해제되어 무리하게 당기지 않아도 되어 작동의 편리성이 매우 우수하다. With the needle hollow hub applying the locking link in a direction perpendicular to the longitudinal direction, the locking button slides backwards and unlocks the locking link in the left and right directions in the locking state, so that it does not malfunction even if the locking button is pressed during the procedure. The locking is released while passing through the opening of the locking link, so that there is no need to forcefully pull, so the convenience of operation is very excellent.
또한, 로킹 링크가 링크(rink) 또는 육상 트랙과 같은 형상으로 해서 개구를 통과할 때의 좌우 벌어짐이 생겨도 링크수용홈부의 좌우 측벽에 닿는 점유공간을 최소화시켜 콤팩트화가 가능하다. In addition, even if the locking link has the same shape as a link or a running track, and the left and right gaps occur when passing through the opening, the occupied space contacting the left and right side walls of the link receiving groove can be minimized, thereby making it compact.
또한, 로킹 링크의 배면 내측 가장자리에 내측을 향하게 경사진 조립 경사면이 더 형성됨으로써, 로킹 링크가 로킹수용홈부에 수용 조립된 후 니들 중공 허브를 뒤에서 밀어넣을 때 용이하게 삽입되는 가이드 역할을 한다.In addition, by further forming an inclined assembly inclined toward the inside on the inner edge of the rear surface of the locking link, it serves as a guide that is easily inserted when the needle hollow hub is pushed in after the locking link is received and assembled in the locking receiving groove.
또한, 좌우측 수직링크의 전면에는 살빼기홈이 형성되고, 전후 길이가 좌우측 수직링크<좌우 상측 링크<하측 연결 링크 순서로 길게 함으로써, 개구 근처 부분에서의 좌우 탄성 벌어짐을 보다 용이하게 한다. In addition, a weight loss groove is formed on the front side of the left and right vertical links, and the lengths of the front and rear vertical links are lengthened in the order of the left and right vertical links <left and right upper links <lower connecting links, so that the left and right elasticity in the vicinity of the opening is more easily expanded.
또한, 돌기가 턱돌기와 경사돌기로 이루어짐으로써, 턱돌기는 돌기가 슬롯용 홈에서 앞으로 이탈되는 것을 방지하고, 경사돌기는 로킹 버튼을 버튼 장착홈에 억지 끼워 조립할 때의 가이드 역할을 한다. In addition, since the protrusion is made of a chin protrusion and an inclined protrusion, the chin protrusion prevents the protrusion from being dislodged from the slot for the slot forward, and the inclined protrusion serves as a guide when assembling the locking button by forcefully inserting it into the button mounting groove.
또한, 이 돌출판(733a)은 도 8과 같이 중공 하우징(310)의 조립구(360)의 외주면에 카테터 보호 캡(800)이 끼워지면서 덮여지면서 동시에 풀 버튼(731)의 경사면(731a) 높이와도 거의 같게 배치된다.In addition, the protrusion plate 733a is covered while the catheter protection cap 800 is fitted to the outer circumferential surface of the assembly hole 360 of the hollow housing 310 as shown in FIG. 8 and at the same time the height of the inclined surface 731a of the pull button 731 And are arranged almost the same.
따라서, 중공 하우징의 조립구의 외주면에는 돌출판의 상면을 덮은 채 카테터 보호 캡이 더 끼워져 결합됨으로써, 카테터 보호 캡(800)이 제거되기 전에는 돌출판(733a)이 눌려져 있으면서도 풀 버튼을 뒤로 당길 위치가 없어 취급이 대단히 편리하다. 즉, 시술하기 전까지 포장을 뜯거나 이송 등의 외력이나 충격이 가해지더라도 뒤로 당겨지는 오작동을 확실히 방지할 수 있다.Therefore, the catheter protection cap is further fitted and coupled to the outer circumferential surface of the assembly hole of the hollow housing while covering the upper surface of the protruding plate, so that the position to pull the pull button back while the protruding plate 733a is pressed before the catheter protection cap 800 is removed. It is very convenient to handle. That is, even if an external force or impact such as opening or conveying is applied before the procedure is performed, a malfunction that is pulled back can be reliably prevented.
도 1 및 도 2는 종래 안전 카테터 조립체로서 니들이 후퇴되기 전후의 종단면도. 1 and 2 are longitudinal cross-sectional views before and after the needle is retracted as a conventional safety catheter assembly.
도 3 및 도 4는 도 1의 3,4-3,4선을 취하여 본 로킹 및 언로킹 위치를 나타낸 니들 로킹 기구의 횡단면도. 3 and 4 are cross-sectional views of a needle locking mechanism showing locking and unlocking positions taken along lines 3, 4-3, and 4 of FIG. 1;
도 5는 다른 종래의 안전 카테터 조립체의 작동 순서도. Figure 5 is a flow chart of the operation of another conventional safety catheter assembly.
도 6은 본 발명의 바람직한 실시예에 따른 안전 카테터 조립체를 나타낸 분해 사시도. Figure 6 is an exploded perspective view showing a safety catheter assembly according to a preferred embodiment of the present invention.
도 7은 도 6의 조립 사시도. Figure 7 is an assembled perspective view of Figure 6;
도 8은 도 7의 8-8선을 취하여 본 단면도. 8 is a cross-sectional view taken along line 8-8 of FIG. 7;
도 9는 도 8에서 보호 캡을 제거한 단면도. 9 is a cross-sectional view of FIG. 8 with the protective cap removed.
도 10은 도 9의 니들 허브가 후퇴된 상태의 단면도. 10 is a cross-sectional view of a state in which the needle hub of FIG. 9 is retracted.
도 11 및 도 12는 로킹 기구의 주요 부분을 도시한 사시도. 11 and 12 are perspective views showing main parts of the locking mechanism.
도 13은 도 8의 13-13선을 취하여 본 단면도. 13 is a cross-sectional view taken along line 13-13 of FIG. 8;
도 14, 도 15 및 도 16은 로킹 링크의 정면 사시도, 정면도 및 배면도.14, 15 and 16 are a front perspective view, a front view and a rear view of the locking link.
도 17은 로킹 링크의 배면 사시도. 17 is a rear perspective view of the locking link.
도 18 및 도 19는 로킹 버튼의 상면 및 저면 사시도. 18 and 19 are top and bottom perspective views of the locking button.
도 20은 도 18의 측면도. Figure 20 is a side view of Figure 18;
도 21 내지 도 23은 로킹 버튼과 로킹 링크의 언로킹 작동 순서도. 21 to 23 are a flow chart of the unlocking operation of the locking button and the locking link.
이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하는데, 종래의 것과 동일한 부분에 대해서는 동일한 참조부호를 부여하고 상세한 설명은 생략한다. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, but the same reference numerals are assigned to the same parts as those of the prior art, and detailed descriptions will be omitted.
도 6은 본 발명의 바람직한 실시예에 따른 안전 카테터 조립체를 나타낸 분해 사시도이고, 도 7은 도 6의 조립 사시도이고, 도 8은 도 7의 8-8선을 취하여 본 단면도이고, 도 9는 도 8에서 보호 캡을 제거한 단면도이고, 도 10은 도 9의 니들 허브가 후퇴된 상태의 단면도이고, 도 11 및 도 12는 로킹 기구의 주요 부분을 도시한 사시도이고, 도 13은 도 8의 13-13선을 취하여 본 단면도이고, 도 14, 도 15 및 도 16은 로킹 링크의 정면 사시도, 정면도 및 배면도이고, 도 17은 로킹 링크의 배면 사시도이고, 도 18 및 도 19는 로킹 버튼의 상면 및 저면 사시도이고, 도 20은 도 18의 측면도이고, 도 21 내지 도 23은 로킹 버튼과 로킹 링크의 언로킹 작동 순서도이다.6 is an exploded perspective view showing a safety catheter assembly according to a preferred embodiment of the present invention, FIG. 7 is an assembled perspective view of FIG. 6, FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 7, and FIG. 9 is 8 is a cross-sectional view with the protective cap removed, FIG. 10 is a cross-sectional view of a state in which the needle hub of FIG. 9 is retracted, FIGS. 11 and 12 are perspective views showing main parts of the locking mechanism, and FIG. 13 is 13- A cross-sectional view taken along line 13, FIGS. 14, 15 and 16 are a front perspective view, a front view, and a rear view of the locking link, FIG. 17 is a rear perspective view of the locking link, and FIGS. 18 and 19 are top surfaces of the locking button And a bottom perspective view, FIG. 20 is a side view of FIG. 18, and FIGS. 21 to 23 are flowcharts illustrating an unlocking operation of the locking button and the locking link.
도 6 내지 도 8에 도시한 바와 같이, 본 실시예에 따른 안전 카테터 조립체(200)는 내부에 하우징 공동(311)과 챔버(391)를 갖는 하우징(300)과, 하우징(300)의 전측에 설치되는 카테터(400)와, 하우징(300)의 내부에 배치되는 니들 중공 허브(500)와, 니들 중공 허브(500)를 챔버(391) 내로 후퇴시키는 코일 스프링(600)과, 압축된 코일 스프링(600)의 해제로 니들 중공 허브(500)가 하우징 챔버(391) 내로 후퇴시키는 로킹 기구(700)를 포함한다.6 to 8, the safety catheter assembly 200 according to the present embodiment includes a housing 300 having a housing cavity 311 and a chamber 391 therein, and a front side of the housing 300. The catheter 400 to be installed, the needle hollow hub 500 arranged inside the housing 300, the coil spring 600 for retracting the needle hollow hub 500 into the chamber 391, and a compressed coil spring It includes a locking mechanism 700 that retracts the needle hollow hub 500 into the housing chamber 391 upon release of 600.
하우징(300)은 전후로 관통한 하우징 공동(311)을 갖는 중공 하우징(310)과, 중공 하우징(310)의 후측에 설치되며 하우징 챔버(391)를 갖는 캡 하우징(390)을 포함한다. The housing 300 includes a hollow housing 310 having a housing cavity 311 penetrating back and forth, and a cap housing 390 installed at the rear side of the hollow housing 310 and having a housing chamber 391.
중공 하우징(310)의 공동(311) 내에는 니들 중공 허브(500)가 배치된다. A needle hollow hub 500 is disposed in the cavity 311 of the hollow housing 310.
중공 하우징(310)의 외주면은 파이프 형상의 내주면과 달리 사각형상으로 되어, 시술자가 손으로 잡기 쉽다. The outer circumferential surface of the hollow housing 310 has a square shape unlike the pipe-shaped inner circumferential surface, so that it is easy for the operator to hold it by hand.
캡 하우징(390)에는 하우징 챔버(391)를 갖는 한쪽이 막힌 관 형상이다.The cap housing 390 has a housing chamber 391 in the shape of a closed tube.
또한, 캡 하우징(390)은 중공 하우징(310)의 후측에서 연장 형성된 캡하우징 연결관(313)의 외주면에 삽입되어 맞춤 밀폐 조립됨으로써 누액 및 이탈을 방지한다. In addition, the cap housing 390 is inserted into the outer circumferential surface of the cap housing connection pipe 313 extending from the rear side of the hollow housing 310 to be sealed and assembled to prevent leakage and separation.
즉, 도 8에 도시한 바와 같이 캡하우징 연결관(313)의 외주면에는 끼움홈(313a)이 형성되고, 캡 하우징(390)의 선단에는 끼움홈(313a)에 끼워지는 끼움돌기(390a)가 형성되어 있다. That is, as shown in FIG. 8, a fitting groove 313a is formed on the outer circumferential surface of the cap housing connector 313, and a fitting protrusion 390a that is fitted into the fitting groove 313a is formed at the front end of the cap housing 390. Is formed.
카테터(400)는 혈관 등에 삽입되는 카테터 튜브(410)와, 카테터 튜브(410)를 홀딩하는 카테터 중공 허브(430)로 이루어진다. The catheter 400 includes a catheter tube 410 inserted into a blood vessel or the like, and a catheter hollow hub 430 that holds the catheter tube 410.
카테터 중공 허브(430)는 중공 하우징(310)의 전측에서 연장 형성된 카테터 연결관(312)의 외주면에 삽입된다. The catheter hollow hub 430 is inserted into the outer peripheral surface of the catheter connector 312 extending from the front side of the hollow housing 310.
니들 중공 허브(500)는 혈관 등에 삽입되는 니들(510)과, 니들(510)을 홀딩하는 니들 중공 홀더(530)로 이루어진다. The needle hollow hub 500 includes a needle 510 inserted into a blood vessel or the like, and a needle hollow holder 530 that holds the needle 510.
니들(510)은 날카로운 니들 팁(511)이 외부로 노출되게 카테터 튜브(410) 내부로 삽입된다. The needle 510 is inserted into the catheter tube 410 so that the sharp needle tip 511 is exposed to the outside.
또한, 니들 중공 홀더(530)의 끝단의 외주면에는 직경이 큰 로킹 플랜지(550)가 형성되어 있다. In addition, a locking flange 550 having a large diameter is formed on the outer peripheral surface of the end of the hollow needle holder 530.
로킹 플랜지(550)는 로킹 링크(710)의 내부 중공 형상과 유사한 것이 바람직하다. The locking flange 550 is preferably similar to the inner hollow shape of the locking link 710.
즉, 로킹 플랜지(550)는 링크(rink) 또는 육상 트랙과 같은 형상으로 하는 게 바람직하다. That is, it is preferable that the locking flange 550 has a shape such as a link or a running track.
또한, 로킹 플랜지(550)에는 멤브레인(570)이 설치되어, 에어 필터 벤트로서 혈액 및 체액의 누출 방지 등의 기능을 한다. In addition, a membrane 570 is provided on the locking flange 550 to function as an air filter vent to prevent leakage of blood and body fluid.
중공 하우징(310)과 니들 중공 홀더(530)는 시술자(의료인)로 하여금 정확한 혈관 천자(인체에 침을 찔러서 체내로부터 액체 또는 세포나 조직을 채취하는 것) 확인을 위해 혈액 플래시백(flashback)의 시인성을 높이기 위한 투명재를 사용하는 게 바람직하다. The hollow housing 310 and the needle hollow holder 530 allow the operator (medical practitioner) to accurately puncture blood vessels (to collect liquid or cells or tissues from the body by stabbing a needle in the human body), the visibility of blood flashback It is desirable to use a transparent material to increase the level.
코일 스프링(600)은 도 8 내지 도 10에 도시한 바와 같이, 중공 하우징(310)의 걸림턱(314)과 로킹 플랜지(550) 사이에 걸쳐 배치되어 있다. As shown in FIGS. 8 to 10, the coil spring 600 is disposed between the locking projection 314 of the hollow housing 310 and the locking flange 550.
코일 스프링(600)이 도 9와 같이 압축된 상태(로킹 상태)에서는 니들 중공 허브(500)가 전진해 있고, 도 10과 같이 해제된 상태(언로킹 상태)에서는 니들 중공 허브(500)가 후퇴되어 카테터(400)로부터 니들(510)이 완전히 벗어난다.When the coil spring 600 is compressed as shown in FIG. 9 (locked state), the needle hollow hub 500 is advanced, and in the released state (unlocked state) as shown in FIG. 10, the needle hollow hub 500 is retracted. As a result, the needle 510 completely deviates from the catheter 400.
로킹 기구(700)는 코일 스프링(600)이 압축된 상태를 유지(로킹)하거나 해제(언로킹)시켜 니들 중공 허브(500)를 뒤로 후퇴시키는 기구이다. The locking mechanism 700 is a mechanism for retracting the needle hollow hub 500 back by maintaining (locking) or releasing (unlocking) the coil spring 600 in a compressed state.
로킹 기구(700)는 도 11 내지 도 20에 도시한 바와 같이, 니들 중공 허브(500)를 로킹하는 로킹 링크(locking rink)(710)와, 뒤로 슬라이딩 시키면 로킹 링크(710)가 벌어짐에 따라 상기 니들 중공 허브(500)가 후퇴시키는 로킹 버튼(730)을 포함한다.As shown in Figs. 11 to 20, the locking mechanism 700 includes a locking link 710 that locks the needle hollow hub 500, and the locking link 710 opens when sliding backward. The needle hollow hub 500 includes a locking button 730 to be retracted.
로킹 링크(710)는 중공 하우징(310)의 내부에 설치되는 중공 개단면(중공 폐단면의 일부가 잘린 중공 개단면)의 형상으로 이루어진다. The locking link 710 has a shape of a hollow open cross-section (a hollow open cross-section in which a part of the hollow closed cross-section is cut off) installed inside the hollow housing 310.
즉, 로킹 링크(710)는 도 14 내지 도 17에 도시한 바와 같이 정면에서 볼 때 중공 개단면의 링크(경기장 트랙) 형상으로서, 서로 마주보는 좌우측 수직링크(711)와, 좌우측 수직링크(711)의 하측을 연결하는 하측 연결 링크(712)와, 중심에 절개부인 개구(715)가 형성되게 좌우측 수직링크(711)의 상측 각각에서 내측을 향해 연장되는 좌우 상측 링크(713)(714)와, 좌우 상측 링크(713)(714)의 하면 후방에 형성되는 로킹 걸림턱(716)을 포함한다.That is, the locking link 710 is a link (stadium track) shape of a hollow open cross-section when viewed from the front as shown in FIGS. 14 to 17, and the left and right vertical links 711 and the left and right vertical links 711 facing each other. ) And the upper left and right links 713 and 714 extending from the upper side of the left and right vertical links 711 toward the inside so that an opening 715 which is an incision at the center is formed. , And a locking locking projection 716 formed at the rear of the lower surface of the upper left and right links 713, 714.
따라서, 로킹 플랜지(550)의 외주면이 로킹 링크(710)의 내주면에 놓인 상태에서 로킹 걸림턱(716)에 걸려 로킹된 상태를 유지하게 된다. Accordingly, while the outer circumferential surface of the locking flange 550 is placed on the inner circumferential surface of the locking link 710, the locking protrusion 716 is caught and the locked state is maintained.
이 로킹된 상태에서 로킹 버튼(730)이 뒤로 슬라이딩하면서 개구(715)로 들어가 벌리면 좌우 상측 링크(713)(714)도 좌우로 벌어짐에 따라 로킹 걸림턱(716)도 벌어져 로킹이 해제되게 된다. 물론, 좌우측 수직링크(711)도 함께 벌어지게 된다.In this locked state, when the locking button 730 slides backward and enters the opening 715 and opens, the upper left and right links 713 and 714 are also open to the left and right, so that the locking hook 716 is also opened and the locking is released. Of course, the left and right vertical links 711 are also opened together.
특히, 도 14와 같이 측면에서 볼 때 좌우측 수직링크(711)의 전면에는 ㄷ자 형상으로 살빼기홈(717)을 두어, 좌우측 수직링크(711)의 전후 길이(w3)를 얇게 해서 좌우측 탄성 벌어짐을 양호하게 한다. In particular, when viewed from the side, as shown in FIG. 14, by placing a weight-removing groove 717 in a U shape on the front side of the left and right vertical links 711, the front and rear lengths w3 of the left and right vertical links 711 are made thin so that the left and right elasticity is good. Let's do it.
또한, 좌우 상측 링크(713)(714)의 전후 길이(w2)를 하측 연결 링크(712)의 전후 길이(w1)보다 얇게 한다. Further, the front and rear length w2 of the left and right upper links 713 and 714 is made thinner than the front and rear length w1 of the lower connection link 712.
따라서, 좌우측 수직링크(711)의 전후 길이<좌우 상측 링크(713)(714)의 전후 길이<하측 연결 링크(712)의 전후 길이로(또는 두껍게) 해서, 링크수용홈부(330)에 끼워지는 하측 연결 링크(712)에 대해 좌우측 수직링크(711)와 좌우 상측 링크(713)(714)의 탄성 벌어짐을 용이하게 한다.Therefore, the front and rear lengths of the left and right vertical links 711 <the front and rear lengths of the left and right upper links 713 and 714 <the front and rear lengths of the lower connecting links 712 (or thicker), so that they are fitted in the link receiving groove 330 It facilitates the elastic spread of the left and right vertical links 711 and the left and right upper links 713 and 714 with respect to the lower connection link 712.
또한, 링크(육상 트랙) 형상 또는 좌우측 수직링크(711)가 수직하게 한 것은 벌어질 때 중공 하우징(310)에 형성된 링크수용홈부(330)의 좌우 측벽(333)에 닿아 충분히 벌어지지 않는 것을 방지하고 크기도 콤팩트하게 할 수 있다. 예컨대 C자형 링크인 경우 벌어지다가 좌우 측벽에 먼저 닿아 더는 벌어지지 않을 경우 링크수용홈부의 좌우 측벽을 더 넓혀야 하는데 이럴 경우 점유공간의 확대로 중공 하우징의 크기도 커지게 된다. In addition, when the link (land track) shape or the left and right vertical links 711 are vertically opened, they are prevented from reaching the left and right side walls 333 of the link receiving groove 330 formed in the hollow housing 310 and not sufficiently open. And it can be made compact in size. For example, in the case of a C-shaped link, if it opens and then touches the left and right side walls first and does not open anymore, the left and right side walls of the link receiving groove must be wider. In this case, the size of the hollow housing increases due to the expansion of the occupied space.
한편, 도 17 및 도 16에 도시한 바와 같이, 로킹 링크(710)의 배면 내측 가장자리에는 내측을 향하게 경사진(면취된) 조립 경사면(710a)이 형성되어 있다. On the other hand, as shown in FIGS. 17 and 16, an assembly inclined surface 710a inclined (chamfered) toward the inside is formed at the inner edge of the rear surface of the locking link 710.
즉 조립 경사면(710a)은 배면에서 전면으로 향할수록 직경이 작아지는 깔때기 형상과 매우 유사하다.That is, the assembly inclined surface 710a is very similar to a funnel shape whose diameter decreases from the rear to the front.
이러한 조립 경사면(710a)은 도 21에 도시한 바와 같이 로킹 플랜지(550)의 가장자리가 닿은 상태로 앞으로 밀어넣어 조립할 때 가이드 면의 역할을 한다. As shown in FIG. 21, the inclined assembly 710a serves as a guide surface when the locking flange 550 is pushed forward in a contacted state and assembled.
즉, 로킹 링크(700)가 중공 하우징(310)의 링크수용홈부(330)에 수용된 상태에서 도 21과 같이 대치된 상태에서 로킹 플랜지(550)를 앞으로 계속 밀어 넣으면 조립 경사면(710a)을 타면서 로킹 링크(710)가 벌어지면서 통과되면 조립이 완료된다. That is, if the locking link 700 is accommodated in the link receiving groove 330 of the hollow housing 310 and the locking flange 550 is pushed forward continuously as shown in FIG. 21 while riding the assembly inclined surface 710a Assembly is completed when the locking link 710 is opened and passed.
개구(715)는 도 21 내지 도 23에 도시한 바와 같이, 평면에서 볼 때, 뒤로 갈수록 점점 폭이 좁아지는 깔때기형 도입안내개구(715a)와, 깔때기형 도입안내부(715a)의 후단에서 연장되는 직선개구(715b)로 이루어진다. As shown in FIGS. 21 to 23, the opening 715 extends from the rear end of the funnel-shaped introduction guide opening 715a and the funnel-shaped introduction guide part 715a, which gradually narrows toward the rear when viewed from the top. It consists of a straight opening 715b.
이러한 로킹 링크(710)는 도 11 내지 도 13에 도시한 바와 같이, 중공 하우징(310)의 횡방향으로 형성된 링크수용홈부(330)에 위에서 아래로 삽입 수용된다. The locking link 710 is inserted and received in the link receiving groove 330 formed in the transverse direction of the hollow housing 310 as shown in FIGS. 11 to 13.
링크수용홈부(330)는 도 13에 도시한 바와 같이, 하측 연결 링크(712)가 안착되는 안착홈(331)과, 좌우측 수직링크(711)와 공간(s)을 두고 마주하는 좌우 측벽(333)으로 구성되어 있다.As shown in FIG. 13, the link receiving groove 330 has a seating groove 331 in which the lower connection link 712 is seated, and the left and right side walls 333 facing each other with a space (s) with the left and right vertical links 711. ).
공간(s)은 좌우측 수직링크(711)와 좌우 상측 링크(713)(714)가 벌어질 수 있는 허용 공간이다.The space s is an allowable space in which the left and right vertical links 711 and the left and right upper links 713 and 714 can be opened.
로킹 버튼(730)은 풀(pull) 버튼(731)과, 풀 버튼(731)의 하면에 형성되는 슬라이드 판(733)과, 슬라이드 판(733)의 후측에 형성되는 개구삽입편(735)을 포함한다. The locking button 730 includes a pull button 731, a slide plate 733 formed on the lower surface of the pull button 731, and an opening insertion piece 735 formed on the rear side of the slide plate 733. Include.
슬라이드 판(733)의 좌우 측면에는 윙 형태의 돌기(734)가 형성되어 있다.Wing-shaped protrusions 734 are formed on the left and right sides of the slide plate 733.
중공 하우징(310)의 상면에는 로킹 버튼(730)이 슬라이딩 가능하게 장착되는 버튼 장착홈(350)이 형성되어 있다. A button mounting groove 350 into which the locking button 730 is slidably mounted is formed on the upper surface of the hollow housing 310.
버튼 장착홈(350)은 링크수용홈부(330)를 중심으로 전측 버튼 장착홈(350a)과 후측 버튼 장착홈(350b)으로 이루어진다. Button mounting groove 350 is composed of a front button mounting groove (350a) and a rear button mounting groove (350b) around the link receiving groove (330).
전측 버튼 장착홈(350a)의 좌우 측벽(351)에는 전후 길이방향의 슬롯용 홈(353)이 형성되어 있다. Slots 353 are formed in the left and right side walls 351 of the front button mounting groove 350a in the front and rear longitudinal direction.
슬롯용 홈(353)에는 돌기(734)가 슬라이딩 가능하게 끼워진다. The protrusion 734 is slidably fitted in the slot 353.
돌기(734)는 이등변삼각형 형태로서, 턱돌기(734a)와 경사돌기(734b)로 이루어진다.The protrusion 734 has an isosceles triangle shape and includes a jaw protrusion 734a and an inclined protrusion 734b.
턱돌기(734a)는 돌기(734)가 슬롯용 홈(353)에서 앞으로 이탈되는 것을 방지하는 직각 형태의 걸림턱이다.The jaw protrusion 734a is a right-angled locking jaw that prevents the protrusion 734 from being separated from the slot 353 forward.
경사돌기(734b)는 로킹 버튼(730)을 버튼 장착홈(350)에 억지 끼워 조립할 때의 가이드 역할을 한다.The inclined protrusion 734b serves as a guide when assembling the locking button 730 by forcefully fitting it into the button mounting groove 350.
개구삽입편(735)은 도 21에 도시한 바와 같이, 깔때기형 도입안내개구(715a)로 안내되어 직선개구(715b) 상에 배치되는 비작동개구삽입편(735a)과, 직선개구(715b)를 통과하면서 로킹 링크(710)의 벌어지게 하는 작동개구삽입편(735b)으로 이루어진다. As shown in FIG. 21, the opening insertion piece 735 is guided to the funnel-shaped introduction guide opening 715a and disposed on the straight opening 715b, the non-operating opening insertion piece 735a, and the straight opening 715b. It consists of an operation opening insertion piece (735b) to open the locking link (710) while passing through.
즉, 직선개구(715b)의 폭은 작동개구삽입편(735b)의 폭보다 작고, 작동개구삽입편(735b)과 비작동개구삽입편(735a) 사이에는 깔때기 형상의 경사면(735c)이 형성되는 게 바람직하다. That is, the width of the straight opening 715b is smaller than the width of the operating opening insertion piece 735b, and a funnel-shaped inclined surface 735c is formed between the operating opening insertion piece 735b and the non-operating opening insertion piece 735a. Is preferable.
이러한 개구삽입편(735)은 도 21 내지 도 23과 같이 로킹 버튼(730)이 뒤로 당겨지면서 로킹 링크(710)의 개구(715)를 통과시키면서 좌우로 벌림으로써 도 23과 같이 로킹 플랜지(550)가 로킹 걸림턱(716)에서 벗어나면서 도 10과 같이 탄성력에 의해 뒤로 후퇴되게 된다. This opening inserting piece 735 is opened to the left and right while passing through the opening 715 of the locking link 710 while the locking button 730 is pulled back as shown in FIGS. 21 to 23, so that the locking flange 550 as shown in FIG. 23 As shown in FIG. 10, while being away from the locking locking jaw 716, it is retracted back by the elastic force.
풀 버튼(731)은 버튼 장착홈(350)의 상부에 배치되며, 그 전면에는 검지로 잡고 뒤로 당기기 편리하게 직각에 대해 1상한 쪽으로 기울어지는 경사면(731a)이 형성되어 있다. The pull button 731 is disposed on the top of the button mounting groove 350, and has an inclined surface 731a that is inclined toward one upper limit with respect to a right angle to be easily pulled back by holding it with an index finger on its front side.
슬라이드 판(733)은 풀 버튼(731)의 경사면(731a)보다 앞으로 더 돌출한 돌출판(733a)이 형성되어 있다. The slide plate 733 has a protruding plate 733a protruding further forward than the inclined surface 731a of the pull button 731.
이 돌출판(733a)은 도 8과 같이 중공 하우징(310)의 조립구(360)의 외주면에 카테터 보호 캡(800)이 끼워지면서 덮여지면서 동시에 풀 버튼(731)의 경사면(731a) 높이와도 거의 같게 배치된다.This protruding plate 733a is covered while being fitted with the catheter protection cap 800 on the outer circumferential surface of the assembly hole 360 of the hollow housing 310 as shown in FIG. 8 and is also equal to the height of the inclined surface 731a of the pull button 731 They are arranged almost the same.
따라서, 카테터 보호 캡(800)이 제거되기 전에는 돌출판(733a)이 눌려져 있으면서도 풀 버튼(731)을 뒤로 당길 위치가 없어 로킹 상태가 안정적으로 유지된다. 즉, 시술하기 전까지 포장을 뜯거나 이송 등의 외력이나 충격이 가해지더라도 뒤로 당겨지는 오작동을 확실히 방지할 수 있어 취급이 대단히 편리하다. Therefore, before the catheter protection cap 800 is removed, the protruding plate 733a is pressed and there is no position to pull the pull button 731 back, so that the locked state is stably maintained. In other words, it is very convenient to handle because it can reliably prevent a malfunction that is pulled back even if an external force or impact such as transport or the like is applied before the treatment is opened.
후측 버튼 장착홈(350b)의 바닥에는 도 11 및 도 12에 도시한 바와 같이, 링크수용홈부(330)와 서로 통하는 개구삽입편허용홈(355)이 형성되어 있다. In the bottom of the rear button mounting groove (350b), as shown in Figs. 11 and 12, the link receiving groove portion 330 and the opening insertion piece allowing groove 355 to communicate with each other is formed.
개구삽입편허용홈(355)은 비작동개구삽입편(735a)과 작동개구삽입편(735b)이 더 들어오게 허용하는 비작동개구삽입허용홈(355a)과 작동개구삽입허용홈(355b)으로 이루어진다.The opening insertion piece allowable groove 355 is a non-operating opening insertion allowable groove (355a) and an actuating opening insertion allowable groove (355b) to allow the non-operating opening insertion piece (735a) and the working opening insertion piece (735b) to enter. Done.
이와 같이 본 실시예에서는 로킹 버튼(730)이 뒤로 당겨 로킹 링크(710)의 벌림으로 로킹 플랜지(550)의 로킹 상태를 해제하기 때문에, 시술 중에 버튼을 눌러서 생기는 오작동이 생길 우려가 전혀 없고, 뒤로 당겨 좌우로 벌리는 구조이기 때문에 상대적으로 뒤로 당기는 힘이 덜해서 작동의 편리성이 매우 좋다. As described above, in this embodiment, since the locking button 730 is pulled back to release the locking state of the locking flange 550 by opening the locking link 710, there is no fear of malfunction caused by pressing the button during the procedure. Since it is a structure that is pulled out from side to side, it has relatively less force to pull back, so the operation is very convenient.
본 발명의 개념에 따른 실시 예들은 다양한 변경들을 가할 수 있고 여러 가지 형태들을 가질 수 있으므로 실시 예들을 도면에 예시하고 본 명세서에서 상세히 설명하고자 하지만, 이는 본 발명의 개념에 따른 실시 예들을 특정한 개시 형태들에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물, 또는 대체물을 포함한다.Since the embodiments according to the concept of the present invention can apply various changes and may have various forms, the embodiments will be illustrated in the drawings and described in detail in the present specification, but this is a specific disclosure form for the embodiments according to the concept of the present invention. They are not intended to be limited to, and include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.
[부호의 설명][Explanation of code]
200 : 안전 카테터 조립체,300 : 하우징200: safety catheter assembly, 300: housing
311 : 하우징 공동, 330 : 링크수용홈부311: housing cavity, 330: link receiving groove
331 : 안착홈, 333 : 좌우 측벽331: seating groove, 333: left and right side walls
350 : 버튼 장착홈,351 : 좌우 측벽350: button mounting groove, 351: left and right side walls
353 : 슬롯용 홈, 360 : 조립구353: slot for groove, 360: assembly hole
390 : 캡 하우징, 391 : 하우징 챔버390: cap housing, 391: housing chamber
400 : 카테터, 500 : 니들 중공 허브400: catheter, 500: needle hollow hub
511 : 니들 팁, 550 : 로킹 플랜지511: needle tip, 550: locking flange
570 : 멤브레인, 600 : 코일 스프링570: membrane, 600: coil spring
700 : 로킹 기구, 710 : 로킹 링크(locking rink)700: locking mechanism, 710: locking link (locking rink)
710a : 조립 경사면, 711 : 좌우측 수직링크710a: assembly slope, 711: left and right vertical links
712 : 하측 연결 링크,713,714 : 좌우 상측 링크712: lower connection link, 713,714: left and right upper link
715 : 개구, 716 : 로킹 걸림턱715: opening, 716: locking locking jaw
717 : 살빼기홈, 730 : 로킹 버튼717: lose weight groove, 730: locking button
731 : 풀(pull) 버튼, 733 : 슬라이드 판731: pull button, 733: slide plate
733a : 돌출판, 734 : 돌기733a: protruding plate, 734: protrusion
734a : 턱돌기, 734b : 경사돌기734a: jaw protrusion, 734b: oblique protrusion
735 : 개구삽입편, 800 : 카테터 보호 캡735: opening insertion piece, 800: catheter protection cap
Claims (4)
- 전후로 관통한 하우징 공동(311)을 갖는 중공 하우징(310)과, 중공 하우징(310)의 후측에 설치되며 하우징 챔버(391)를 갖는 캡 하우징(390)을 포함하는 하우징(300); 중공 하우징(310)의 전측에 설치되는 카테터(400); 하우징 공동(311)의 내부에 배치되는 니들 중공 허브(500); 니들 중공 허브(500)를 챔버(391) 내로 후퇴시키는 코일 스프링(600); 압축된 코일 스프링(600)의 해제로 로킹된 니들 중공 허브(500)가 하우징 챔버(391) 내로 후퇴시키는 로킹 기구(700)를 포함하되, A housing 300 including a hollow housing 310 having a housing cavity 311 penetrating back and forth, and a cap housing 390 installed at the rear side of the hollow housing 310 and having a housing chamber 391; The catheter 400 installed on the front side of the hollow housing 310; A needle hollow hub 500 disposed inside the housing cavity 311; A coil spring 600 for retracting the needle hollow hub 500 into the chamber 391; Including a locking mechanism 700 for retracting the needle hollow hub 500 locked by the release of the compressed coil spring 600 into the housing chamber 391,로킹 기구(700)는 중공 하우징(310)의 링크수용홈부(330)에 설치되며 전후방향으로 절개된 개구(715)를 갖는 개단면의 로킹 링크(locking rink)(710)와, 중공 하우징(310)의 버튼 장착홈(350)에 설치된 채 뒤로 슬라이딩되면서 개구(715)를 통과하면서 로킹 링크(710)를 좌우로 벌려 니들 중공 허브(500)의 로킹 상태를 해제시키는 로킹 버튼(730)을 포함하되, The locking mechanism 700 is installed in the link receiving groove 330 of the hollow housing 310 and has an opening 715 cut in the front-rear direction, a locking link 710 of an open cross section, and a hollow housing 310 It includes a locking button 730 for releasing the locking state of the needle hollow hub 500 by opening the locking link 710 to the left and right while sliding backward while being installed in the button mounting groove 350 of). ,로킹 링크(710)는 서로 마주보는 좌우측 수직링크(711)와, 좌우측 수직링크(711)의 하측을 연결하는 하측 연결 링크(712)와, 중심에 개구(715)가 형성되게 좌우측 수직링크(711)의 상측 각각에서 내측을 향해 연장되는 좌우 상측 링크(713)(714)와, 좌우 상측 링크(713)(714)의 하면 후방에 형성되어 니들 중공 허브(500)의 로킹 플랜지(550)가 걸리는 로킹 걸림턱(716)을 포함하고, The locking link 710 includes left and right vertical links 711 facing each other, a lower connection link 712 connecting the lower side of the left and right vertical links 711, and left and right vertical links 711 so that an opening 715 is formed in the center. ) Is formed at the rear of the lower left and right upper links 713, 714, and the lower left and right upper links 713, 714 extending toward the inside from each of the upper sides of the needle, and the locking flange 550 of the hollow needle 500 is caught. Including a locking hook 716,링크수용홈부(330)는 하측 연결 링크(712)가 안착되는 안착홈(331)과, 좌우측 수직링크(711)와 공간(s)을 두고 마주하는 좌우 측벽(333)을 포함하는 안전 카테터 조립체. Link receiving groove 330 is a safety catheter assembly comprising a seating groove 331 in which the lower connection link 712 is seated, and left and right side walls 333 facing each other with a left and right vertical link 711 and a space (s).
- 청구항 1에 있어서, The method according to claim 1,로킹 링크(710)의 배면 내측 가장자리에는 내측을 향하게 경사진 조립 경사면(710a)이 더 형성되는 안전 카테터 조립체. A safety catheter assembly in which an assembly inclined surface 710a inclined toward the inside is further formed on the inner edge of the rear surface of the locking link 710.
- 청구항 2에 있어서, The method according to claim 2,좌우측 수직링크(711)의 전면에는 살빼기홈(717)이 형성되고, In the front of the left and right vertical links 711, a weight loss groove 717 is formed,좌우측 수직링크(711)의 전후 길이<좌우 상측 링크(713)(714)의 전후 길이<하측 연결 링크(712)의 전후 길이인 안전 카테터 조립체. A safety catheter assembly that is the front and rear length of the left and right vertical links 711 <the front and rear length of the left and right upper links 713 and 714 <the front and rear length of the lower connecting link 712.
- 청구항 1 내지 청구항 3 중 어느 한 항에 있어서, The method according to any one of claims 1 to 3,로킹 버튼(730)은 풀(pull) 버튼(731)과, 풀 버튼(731)의 하면에 형성되는 슬라이드 판(733)과, 슬라이드 판(733)의 좌우 측면에 형성되는 윙 형태의 돌기(734)와, 슬라이드 판(733)의 후측에 형성되는 개구삽입편(735)을 포함하고, The locking button 730 includes a pull button 731, a slide plate 733 formed on a lower surface of the pull button 731, and a wing-shaped protrusion 734 formed on the left and right sides of the slide plate 733. ), and an opening insertion piece 735 formed on the rear side of the slide plate 733,버튼 장착홈(350)의 좌우 측벽(351)에는 돌기(734)가 전후 슬라이딩 가능하게 끼워지는 슬롯용 홈(353)이 형성되되, The left and right side walls 351 of the button mounting groove 350 are formed with slots 353 for slots into which the protrusions 734 are slidable back and forth,돌기(734)는 직각삼각형의 턱돌기(734a)와 경사돌기(734b)로 이루어지고, The protrusion 734 is made of a right-angled triangular jaw protrusion 734a and an inclined protrusion 734b,슬라이드 판(733)의 전방에는 풀 버튼(731)보다 앞으로 더 돌출한 돌출판(733a)이 형성되고, In front of the slide plate 733, a protruding plate 733a protruding further forward than the pull button 731 is formed,중공 하우징(310)의 조립구(360)의 외주면에는 돌출판(733a)의 상면을 덮은 채 카테터 보호 캡(800)이 더 끼워져 결합되는 안전 카테터 조립체.A safety catheter assembly in which a catheter protection cap 800 is further inserted and coupled to the outer peripheral surface of the assembly hole 360 of the hollow housing 310 while covering the upper surface of the protruding plate 733a.
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KR102044154B1 (en) * | 2019-04-01 | 2019-11-13 | 주식회사 덕우메디칼 | safety catheter assembly |
KR102418238B1 (en) | 2020-06-19 | 2022-07-06 | 최운선 | Safety catheter assembly |
KR102480888B1 (en) * | 2022-09-15 | 2022-12-26 | 주식회사 덕우메디칼 | safety catheter assembly |
KR20240037496A (en) | 2022-09-15 | 2024-03-22 | 주식회사 덕우메디칼 | safety catheter assembly |
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JP2007296022A (en) * | 2006-04-28 | 2007-11-15 | Medikit Kk | Indwelling needle assembly |
JP2013135857A (en) * | 2006-05-17 | 2013-07-11 | St Jude Medical Atrial Fibrillation Division Inc | Auto lock for catheter handle |
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KR101707181B1 (en) | 2016-02-25 | 2017-02-15 | 김정규 | Safety catheter assembly |
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JP2007296022A (en) * | 2006-04-28 | 2007-11-15 | Medikit Kk | Indwelling needle assembly |
JP2013135857A (en) * | 2006-05-17 | 2013-07-11 | St Jude Medical Atrial Fibrillation Division Inc | Auto lock for catheter handle |
US20180133438A1 (en) * | 2015-05-01 | 2018-05-17 | Centurion Medical Products Corporation | Catheter insertion system and method |
KR200484392Y1 (en) * | 2016-05-04 | 2017-09-01 | (주)시지바이오 | Medical catheter |
KR102044154B1 (en) * | 2019-04-01 | 2019-11-13 | 주식회사 덕우메디칼 | safety catheter assembly |
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