CN113995446A - Combined type full-automatic disposable medical biopsy needle - Google Patents
Combined type full-automatic disposable medical biopsy needle Download PDFInfo
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- CN113995446A CN113995446A CN202011569629.XA CN202011569629A CN113995446A CN 113995446 A CN113995446 A CN 113995446A CN 202011569629 A CN202011569629 A CN 202011569629A CN 113995446 A CN113995446 A CN 113995446A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
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Abstract
The invention discloses a combined type full-automatic disposable medical biopsy needle, which comprises a shell, a fixing frame, an outer needle tube component, a middle needle tube component, an inner needle tube component and a transmission component, wherein the outer needle tube component, the middle needle tube component, the inner needle tube component and the transmission component are respectively connected with the shell through the fixing frame, the outer needle tube component comprises an outer needle tube, the middle needle tube component comprises a middle needle tube, the inner needle tube component comprises an inner needle tube, the side surface of the outer needle tube is provided with an outer needle tube notch, the middle needle tube is inserted into the outer needle tube, the middle needle tube is also provided with a middle needle tube notch under the outer needle tube notch, at least one side of the middle needle tube notch is provided with a cutting blade, the inner needle tube is a solid needle body, the inner needle tube is inserted into the middle needle tube, the inner needle tube can freely move in the length direction of the middle needle tube, and the middle needle tube can rotate under the driving of the transmission component. The combined type full-automatic disposable medical biopsy needle provided by the invention realizes the sampling effect of the existing three biopsy needles in a pure mechanical structure mode, reduces or even avoids the possibility of internal bleeding, can simplify the selection and reduce the operation risk for a doctor, can effectively control the manufacturing cost of products for the manufacturer, and correspondingly reduces the examination and treatment cost of a patient.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a combined type full-automatic disposable medical biopsy needle.
Background
The disposable medical biopsy needle used in the hospital at present has several types, namely a groove type biopsy needle, a tube type biopsy needle and a suction type biopsy needle. The groove type sampling tissue is in a half-pipe half-cylinder strip shape, so that the sampling quantity is relatively small, and the shape is not complete enough. The tubular sampling tissue is full tubular cylinder shape, the sampling amount is relatively large, but internal bleeding can be caused when the puncture cutting is carried out. The suction type is only suitable for taking pus-like tissue. The above three biopsy needles may cause internal bleeding of a patient during sampling due to the relative linear motion of the needle core and the exposed needle tube at the head during puncturing, thereby increasing the risk of operation and the difficulty of handling.
Disclosure of Invention
The invention aims to provide a combined type full-automatic disposable medical biopsy needle to solve the technical problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the invention discloses a combined type full-automatic disposable medical biopsy needle, which comprises a shell, a fixing frame, an outer needle tube component, a middle needle tube component, an inner needle tube component and a transmission component, wherein the outer needle tube component, the middle needle tube component, the inner needle tube component and the transmission component are respectively connected with the shell through the fixing frame, the outer needle tube component comprises an outer needle tube, the middle needle tube component comprises a middle needle tube, the inner needle tube component comprises an inner needle tube, the side surface of the outer needle tube is provided with an outer needle tube notch, the middle needle tube is inserted into the outer needle tube, the middle needle tube is also provided with a middle needle tube notch under the outer needle tube notch, at least one side of the middle needle tube notch is provided with a cutting blade, the inner needle tube is a solid needle body, the inner needle tube is inserted into the middle needle tube, the inner needle tube can freely move in the length direction of the middle needle tube, and the middle needle tube can be rapidly rotated and cut under the driving of the transmission component.
Description of the sampling procedure: when the inner needle core moves rapidly towards one end far away from the head of the middle needle tube, negative pressure is generated in the middle needle tube and is transmitted to the notch of the needle tube, the biopsy tissue is sucked into the middle needle tube at the moment, the middle needle tube is driven by the transmission assembly to complete a circle of rotation and cutting actions, the sampling is completed at the moment, and the needle head can be pulled out from the body.
The invention further improves that: the outer needle tube component also comprises an outer needle tube fixing piece, the tail end of the outer needle tube is fixedly arranged in the outer needle tube fixing piece, and the outer needle tube fixing piece is fixedly arranged in the fixing frame; the middle needle tube component also comprises a middle needle tube fixing piece, a composite spiral driving piece and a sealing ring, wherein the tail end of the middle needle tube is fixedly arranged in the middle needle tube fixing piece, the composite spiral driving piece is sleeved outside the middle needle tube fixing piece and is fixedly connected with the middle needle tube fixing piece, one end of the middle needle tube fixing piece is provided with a circular groove, and the composite spiral driving piece is provided with a composite driving groove; the inner needle core assembly further comprises a guide pipe, a negative pressure pipe, a push rod and a sealing ring, the tail end of the inner needle core is fixedly connected with the push rod, the head end of the inner needle core penetrates through the negative pressure pipe, the guide pipe and the composite spiral driving piece and then is inserted into the middle needle pipe, the head end of the push rod is inserted into the negative pressure pipe, the contact end face of the push rod and the inner wall of the negative pressure pipe is sealed through the sealing ring, the tail end of the negative pressure pipe is inserted into the guide pipe, and the tail end of the middle needle pipe fixing piece is inserted into the head end of the negative pressure pipe and the contact end face of the middle needle pipe fixing piece and the inner wall of the negative pressure pipe is sealed through the sealing ring; the transmission assembly comprises a transmission rod, a pressure spring and a button, the button is fixedly arranged on the shell, one end of the transmission rod is movably connected with the guide pipe, the other end of the transmission rod is arranged in a composite driving groove of the composite spiral driving piece and can slide in the composite driving groove, one end of the pressure spring is fixedly arranged in the fixing frame, the other end of the pressure spring is fixedly connected with the guide pipe, and the button is connected with the shell in a buckling mode.
Instructions for use: after the push rod is loaded (in a natural state), a key is pressed down, the guide tube is tripped, under the thrust of the pressure spring, the guide tube and the push rod slide backwards quickly together, the negative pressure tube is fixed, so that the gas space in the negative pressure tube is increased by 4 to 5 times or more quickly, according to the principle of gas pressure, volume and temperature change, P1V1/T1= P2V2/T2, when the temperature is constant, the gas pressure is inversely proportional to the volume, the gas pressure in the negative pressure tube can be reduced to about 1/4 of the atmospheric pressure, through a matching gap between the middle needle tube and the inner needle core, the negative pressure is transmitted to the notch of the needle tube, and obvious suction can be generated to suck the biopsy tissue into the middle needle tube; the transmission rod is driven by the guide tube to linearly reciprocate in the composite driving groove to drive the composite spiral driving piece to rotate, so that the rotation or pause motion of the middle needle tube can be converted to finish sampling.
The invention further improves that: a male buckle or a female buckle is fixedly arranged on the guide pipe, a female buckle or a male buckle is fixedly arranged on the push rod, and the male buckle or the female buckle of the guide pipe is buckled with the female buckle or the male buckle on the push rod; one end of the guide tube is fixedly provided with a protruding part which is connected with the fastening position of the fixing frame.
The invention further improves that: the guide pipe is fixedly provided with a protruding part, one end of the transmission rod is fixedly provided with a through hole, the other end of the transmission rod is fixedly provided with a cylindrical head, the protruding part of the guide pipe is clamped in the through hole of the transmission rod, and the cylindrical head of the transmission rod is arranged in a composite driving groove of the composite spiral driving piece and can slide in the composite driving groove.
The invention further improves that: the two transmission rods are arranged, the composite spiral driving piece is provided with two composite driving grooves, and the two transmission rods are arranged on two sides of the guide pipe and symmetrically arranged along the center line of the guide pipe so as to improve the transmission stability.
The invention further improves that: the protruding part of the guide tube can slide in the through hole of the transmission rod, and the virtual position is arranged to ensure that the guide tube can be pushed forwards a little and the state of the middle needle tube is not influenced.
The invention further improves that: the composite driving groove is divided into five sections, wherein the first section, the third section and the fifth section are linear grooves, the second section and the fourth section are spiral grooves, the linear grooves and the spiral grooves are in fillet transition connection, and the stroke of each section of the spiral grooves corresponds to 180-degree rotation angle of the middle needle tube. The third section is a straight line groove, and the time for the middle needle tube to be opposite to the groove opening of the outer needle tube can be controlled, so that the reliable suction of the biopsy tissue is ensured.
Controlling the starting angle of the middle needle tube in a natural state: in a natural state, the notches of the middle needle tube and the outer needle tube are staggered to form a closed state. The cylindrical head of the transmission member is positioned in the first section of the linear groove of the driving groove. The transmission piece and the guide tube connecting groove are provided with a section of virtual position, which is used for ensuring that the guide tube can be pushed forward a little and the state of the middle needle tube is not influenced. When the cylindrical head slides to the middle linear groove of the composite driving groove, the groove opening of the middle needle tube is opposite to the groove opening of the outer needle tube. The middle needle cannula has now rotated 180 degrees. This is the best time to aspirate the biopsy. A proper time delay is required.
And (3) controlling the rotation angle of the middle needle tube when the sampling is completed: when the cylinder head slides to the last section of the linear groove of the composite driving groove, the notch of the middle needle tube and the notch of the outer needle tube are staggered to form a closed state. The middle needle tube completes a circle of rotation and cutting action, at the moment, sampling is completed, and the needle head can be pulled out from the body. Pushing the pusher member forward may extrude tissue within the needle cannula.
The invention further improves that: the helix angle of the helical groove is preferably 45 degrees or more.
The invention further improves that: the shell includes shell main part and shell head, and the mount includes left mount and right mount, detachable connection between shell main part and the shell head, detachable connection between left mount and the right mount, easy to assemble and dismantlement.
The invention further improves that: the needle tube is characterized by further comprising a guide post, the guide post is fixedly arranged at one end of the head of the shell, and the outer needle tube penetrates through the guide post.
The combined type full-automatic disposable medical biopsy needle provided by the invention realizes the sampling effect of the existing three biopsy needles in a pure mechanical structure mode, reduces or even avoids the possibility of internal bleeding, can simplify the selection and reduce the operation risk for a doctor, can effectively control the manufacturing cost of products for the manufacturer, and correspondingly reduces the examination and treatment cost of a patient.
Drawings
FIG. 1 is a three-dimensional structure exploded view of a combined fully automatic disposable medical biopsy needle according to the present invention;
FIG. 2 is a structural diagram of an initial state of a combined type fully automatic disposable medical biopsy needle according to the present invention;
FIG. 3 is a schematic view of the structure A-A of FIG. 2;
FIG. 4 is a schematic view of the structure of the outer needle tube with the middle needle tube facing each other;
FIG. 5 is a schematic view of the structure B-B in FIG. 4;
fig. 6 is a structural schematic diagram of the outer needle tube notch returning to the closed state.
FIG. 7 is a schematic view of the structure C-C of FIG. 6;
FIG. 8 is the schematic view of FIG. 2 with the outer, middle and inner needle barrels removed;
FIG. 9 is the view of FIG. 3 with the outer, middle and inner needle barrels removed;
FIG. 10 is the view of FIG. 4 with the outer, middle and inner hubs removed;
FIG. 11 is the view of FIG. 5 with the outer, middle and inner needle barrels removed;
FIG. 12 is the view of FIG. 6 with the outer, middle and inner needle barrels removed;
FIG. 13 is the view of FIG. 7 with the outer, middle and inner hubs removed;
fig. 14 is an enlarged view of the structure of the N portion in fig. 5.
Fig. 15 is a schematic structural view of the composite screw driver.
Fig. 16 is a schematic view of the structure of the transmission rod.
Fig. 17 is a schematic structural view of the guide tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-17, the present invention discloses a combined type full-automatic disposable medical biopsy needle, which comprises a housing, a fixing frame, an outer needle tube assembly, and a middle needle tube assembly, interior needle core subassembly and drive assembly, outer needle tube subassembly, well needle tube subassembly, interior needle core subassembly, drive assembly is connected with the shell through the mount respectively, outer needle tube subassembly includes outer needle tube 2, well needle tube subassembly includes well needle tube 5, interior needle tube subassembly includes interior needle core 9, open the side of outer needle tube 2 has outer needle tube notch 19, well needle tube 5 cartridge is in outer needle tube 2, well needle tube 5 is located also open well needle tube notch 20 under outer needle tube notch 19, well needle tube notch 20 has at least one side to be provided with the cutting edge, interior needle core 9 is solid needle body, interior needle core 9 cartridge is in well needle tube 5, interior needle core 9 can be in the free motion of well needle tube 5 length direction, well needle tube 5 can be rotatory under drive assembly's drive.
Description of the sampling procedure: when the inner needle core 9 moves rapidly towards one end far away from the head of the middle needle tube 5, negative pressure is generated in the middle needle tube 5 and is transmitted to the notch 20 of the middle needle tube, the biopsy tissue is sucked into the middle needle tube 5 at the moment, the middle needle tube 5 completes a circle of rotation and cutting actions under the driving of the transmission assembly, the sampling is completed at the moment, and the needle head can be pulled out from the body.
The invention further improves that: the outer needle tube component also comprises an outer needle tube fixing part 3, the tail end of the outer needle tube 2 is fixedly arranged in the outer needle tube fixing part 3, and the outer needle tube fixing part 3 is fixedly arranged in the fixing frame; the middle needle tube component also comprises a middle needle tube fixing piece 6, a composite spiral driving piece 7 and a sealing ring 8, the tail end of the middle needle tube 5 is fixedly arranged in the middle needle tube fixing piece 6, the composite spiral driving piece 7 is sleeved outside the middle needle tube fixing piece 6 and is fixedly connected with the middle needle tube fixing piece, one end of the middle needle tube fixing piece 6 is provided with a circular groove, and the composite spiral driving piece 7 is provided with a composite driving groove; the inner needle core assembly further comprises a guide tube 15, a negative pressure tube 12, a push rod 10 and a sealing ring 8, the tail end of the inner needle core 9 is fixedly connected with the push rod 10, the head end of the inner needle core 9 penetrates through the negative pressure tube 12, the guide tube 15 and the composite spiral driving piece 7 and then is inserted into the middle needle tube 5, the head end of the push rod 10 is inserted into the negative pressure tube 12, the contact end face of the push rod 10 and the inner wall of the negative pressure tube 12 is sealed through the sealing ring 8, the tail end of the negative pressure tube 12 is inserted into the guide tube 15, the tail end of the middle needle tube fixing piece 6 is inserted into the head end of the negative pressure tube 12, and the contact end face of the middle needle tube fixing piece 6 and the inner wall of the negative pressure tube 12 is sealed through the sealing ring 8; the transmission assembly comprises a transmission rod 4, a pressure spring 11 and a push rod, the push rod is fixedly arranged on the shell, one end of the transmission rod 4 is movably connected with the guide pipe 15, the other end of the transmission rod 4 is arranged in a composite driving groove of the composite spiral driving piece 7 and can slide in the composite driving groove, one end of the pressure spring 11 is fixedly arranged in the fixing frame, the other end of the pressure spring 11 is fixedly connected with the guide pipe 15, and the key 14 is connected with the shell in a buckling mode.
Instructions for use: after the push rod 10 is loaded (in a natural state), the push rod is pressed down, the guide tube 15 is tripped, under the thrust of the pressure spring 11, the guide tube 15 and the push rod 10 and other components slide backwards quickly, the negative pressure tube 12 is fixed, so that the air space in the negative pressure tube 12 is enlarged by 4 to 5 times or more quickly, according to the principle of air pressure volume temperature change, P1V1/T1= P2V2/T2, when the temperature is unchanged, the air pressure is in inverse proportion to the volume, the air pressure in the negative pressure tube 12 can be reduced to about 1/4 of the atmospheric pressure, through the matching gap between the middle needle tube 5 and the inner needle core 9, the negative pressure is transmitted to the notch of the needle tube, and obvious suction can be generated to suck the biopsy tissue into the middle needle tube 5; the transmission rod 4 is driven by the guide tube 15 to do linear reciprocating motion in the composite driving groove to drive the composite spiral driving part 7 to rotate, so that the rotation or pause motion of the middle needle tube 5 can be converted, and the sampling is completed.
The invention further improves that: a male buckle or a female buckle is fixedly arranged on the guide pipe 15, a female buckle or a male buckle is fixedly arranged on the push rod, and the male buckle or the female buckle of the guide pipe 15 is buckled with the female buckle or the male buckle on the push rod; one end of the guide tube 15 is fixedly provided with a protruding part 26, and the protruding part 26 is connected with the fastening position of the fixing frame.
The invention further improves that: the guide pipe 15 is fixedly provided with a protruding part 23, one end of the transmission rod 4 is fixedly provided with a through hole 24, the other end of the transmission rod 4 is fixedly provided with a cylindrical head 25, the protruding part 23 of the guide pipe 15 is clamped in the through hole 24 of the transmission rod 4, and the cylindrical head 25 of the transmission rod 4 is arranged in the composite driving groove of the composite spiral driving part 7 and can slide in the composite driving groove.
The invention further improves that: the two transmission rods 4 are arranged, the composite spiral driving piece 7 is provided with two composite driving grooves, and the two transmission rods 4 are arranged on two sides of the guide pipe 15 and symmetrically arranged along the central line of the guide pipe 15 so as to improve the transmission stability.
The invention further improves that: the protrusion 23 of the guide tube 15 can slide in the through hole 24 of the transmission rod 4, and a section of virtual position is provided to allow the guide tube 15 to be pushed forward a little without affecting the state of the middle needle tube 5.
The invention further improves that: the composite driving groove is divided into five sections, wherein the first section, the third section and the fifth section are linear grooves 21, the second section and the fourth section are spiral grooves 22, the linear grooves 21 and the spiral grooves 22 are in fillet transition connection, and the stroke of each section of spiral grooves 22 corresponds to 180-degree turning angle of the middle needle tube. The third section is a straight groove 21, which can control the time for the middle needle tube 5 to face the outer needle tube notch 19, so as to ensure reliable suction of biopsy tissue.
The starting angle of the needle tube 5 in the natural state is controlled: in the natural state, the middle needle tube 5 and the outer needle tube notch 19 are dislocated to form a closed state. The cylindrical head 25 of the transmission member is located in the first linear section 21 of the drive slot. The connecting groove between the transmission member and the guide tube 15 has a virtual position, which allows the guide tube 15 to be pushed forward a little without affecting the state of the middle needle tube 5. When the cylindrical head 25 slides into the middle linear groove 21 of the compound drive groove, the middle needle tube notch 20 will be opposite to the outer needle tube notch 19. The middle needle cannula 5 has now been rotated through 180 degrees. This is the best time to aspirate the biopsy. A proper time delay is required.
And (3) controlling the rotation angle of the middle needle tube 5 when the sampling is finished: when the cylindrical head 25 slides to the last section of the linear groove 21 of the composite driving groove, the middle needle tube notch 20 and the outer needle tube notch 19 are dislocated to be in a closed state. The middle needle tube 5 completes a circle of rotation and cutting action, and at the moment, sampling is completed, and the needle head can be pulled out from the body. Further pushing forward on the plunger 10 assembly can extrude tissue from the middle needle cannula 5.
The invention further improves that: the spiral angle of the spiral groove 22 is preferably 45 degrees or more.
The invention further improves that: the shell comprises a shell main body 18 and a shell head 17, the fixing frame comprises a left fixing frame 16 and a right fixing frame 1, the shell main body 18 is detachably connected with the shell head 17, and the left fixing frame 16 is detachably connected with the right fixing frame 1, so that the installation and the disassembly are convenient.
The invention further improves that: the needle tube device also comprises a guide post 13, wherein the guide post 13 is fixedly arranged at one end of the head part 17 of the shell, and the outer needle tube 2 penetrates through the guide post 13.
The combined type full-automatic disposable medical biopsy needle provided by the invention realizes the sampling effect of the existing three biopsy needles in a pure mechanical structure mode, reduces or even avoids the possibility of internal bleeding, can simplify the selection and reduce the operation risk for a doctor, can effectively control the manufacturing cost of products for the manufacturer, and correspondingly reduces the examination and treatment cost of a patient.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a full-automatic disposable medical biopsy needle of combined type, includes shell, mount, outer needle tube subassembly, well needle tube subassembly, interior needle core subassembly and drive assembly, and outer needle tube subassembly, well needle tube subassembly, interior needle core subassembly, drive assembly are connected its characterized in that with the shell through the mount respectively: outer needle tube subassembly includes outer needle tube, well needle tube subassembly includes well needle tube, interior needle tube subassembly includes interior needle core, open the side of outer needle tube has outer needle tube notch, well needle tube cartridge is in outer needle tube, well needle tube is located also open well needle tube notch under the outer needle tube notch, well needle tube notch has at least one side to be provided with the cutting edge, interior needle core is solid needle body, interior needle core cartridge is intraductal in well needle, interior needle core can be in the free motion of well needle tube length direction, well needle tube can be rotatory under drive assembly's drive.
2. The compound fully automatic disposable medical biopsy needle according to claim 1, wherein: the outer needle tube component also comprises an outer needle tube fixing piece, the tail end of the outer needle tube is fixedly arranged in the outer needle tube fixing piece, and the outer needle tube fixing piece is fixedly arranged in the fixing frame; the middle needle tube component also comprises a middle needle tube fixing piece, a composite spiral driving piece and a sealing ring, wherein the tail end of the middle needle tube is fixedly arranged in the middle needle tube fixing piece, the composite spiral driving piece is sleeved outside the middle needle tube fixing piece and is fixedly connected with the middle needle tube fixing piece, one end of the middle needle tube fixing piece is provided with a circular groove, and the composite spiral driving piece is provided with a composite driving groove; the inner needle core assembly further comprises a guide pipe, a negative pressure pipe, a push rod and a sealing ring, the tail end of the inner needle core is fixedly connected with the push rod, the head end of the inner needle core penetrates through the negative pressure pipe, the guide pipe and the composite spiral driving piece and then is inserted into the middle needle pipe, the head end of the push rod is inserted into the negative pressure pipe, the contact end face of the push rod and the inner wall of the negative pressure pipe is sealed through the sealing ring, the tail end of the negative pressure pipe is inserted into the guide pipe, and the tail end of the middle needle pipe fixing piece is inserted into the head end of the negative pressure pipe and the contact end face of the middle needle pipe fixing piece and the inner wall of the negative pressure pipe is sealed through the sealing ring; the transmission assembly comprises a transmission rod, a pressure spring and a button, the button is fixedly arranged on the shell, one end of the transmission rod is movably connected with the guide pipe, the other end of the transmission rod is arranged in a composite driving groove of the composite spiral driving piece and can slide in the composite driving groove, one end of the pressure spring is fixedly arranged in the fixing frame, the other end of the pressure spring is fixedly connected with the guide pipe, and the button is connected with the shell in a buckling mode.
3. The compound fully automatic disposable medical biopsy needle according to claim 2, wherein: a male buckle or a female buckle is fixedly arranged on the guide pipe, a female buckle or a male buckle is fixedly arranged on the push rod, and the male buckle or the female buckle of the guide pipe is buckled with the female buckle or the male buckle on the push rod; one end of the guide pipe is fixedly provided with a protruding part, and a fixing frame of the protruding part is buckled and connected.
4. The compound fully automatic disposable medical biopsy needle according to claim 2, wherein: the guide pipe is fixedly provided with a protruding part, one end of the transmission rod is fixedly provided with a through hole, the other end of the transmission rod is fixedly provided with a cylindrical head, the protruding part of the guide pipe is clamped in the through hole of the transmission rod, and the cylindrical head of the transmission rod is arranged in a composite driving groove of the composite spiral driving piece and can slide in the composite driving groove.
5. The compound fully automatic disposable medical biopsy needle according to claim 2, wherein: the two transmission rods are arranged, the composite spiral driving piece is provided with two composite driving grooves, and the two transmission rods are arranged on two sides of the guide pipe and symmetrically arranged along the center line of the guide pipe.
6. The compound fully automatic disposable medical biopsy needle according to claim 2, wherein: the projection of the guide tube can slide in the through hole of the transmission rod.
7. The compound fully automatic disposable medical biopsy needle according to claim 2, wherein: the composite driving groove is divided into five sections, wherein the first section, the third section and the fifth section are linear grooves, the second section and the fourth section are spiral grooves, the linear grooves and the spiral grooves are in fillet transition connection, and the stroke of each section of the spiral grooves corresponds to 180-degree rotation angle of the middle needle tube.
8. The compound fully automatic disposable medical biopsy needle according to claim 7, wherein: the helix angle of the helical groove is 45 degrees or more.
9. The compound fully automatic disposable medical biopsy needle according to claim 1, wherein: the shell comprises a shell main body and a shell head, the fixing frame comprises a left fixing frame and a right fixing frame, the shell main body is detachably connected with the shell head, and the left fixing frame is detachably connected with the right fixing frame.
10. The compound fully automatic disposable medical biopsy needle according to claim 9, wherein: the needle tube is characterized by further comprising a guide post, the guide post is fixedly arranged at one end of the head of the shell, and the outer needle tube penetrates through the guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011569629.XA CN113995446A (en) | 2020-12-26 | 2020-12-26 | Combined type full-automatic disposable medical biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011569629.XA CN113995446A (en) | 2020-12-26 | 2020-12-26 | Combined type full-automatic disposable medical biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113995446A true CN113995446A (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011569629.XA Pending CN113995446A (en) | 2020-12-26 | 2020-12-26 | Combined type full-automatic disposable medical biopsy needle |
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| CN (1) | CN113995446A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117694934A (en) * | 2024-02-05 | 2024-03-15 | 武汉联影智融医疗科技有限公司 | Biopsy needle |
-
2020
- 2020-12-26 CN CN202011569629.XA patent/CN113995446A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117694934A (en) * | 2024-02-05 | 2024-03-15 | 武汉联影智融医疗科技有限公司 | Biopsy needle |
| CN117694934B (en) * | 2024-02-05 | 2024-05-28 | 武汉联影智融医疗科技有限公司 | Biopsy needle |
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