CN212522678U - Disposable medium-length catheter for transperipheral puncture - Google Patents
Disposable medium-length catheter for transperipheral puncture Download PDFInfo
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- CN212522678U CN212522678U CN202020607045.6U CN202020607045U CN212522678U CN 212522678 U CN212522678 U CN 212522678U CN 202020607045 U CN202020607045 U CN 202020607045U CN 212522678 U CN212522678 U CN 212522678U
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Abstract
The utility model relates to a disposable is through medium length pipe in periphery puncture, this medium length pipe is for traditional needle of keeping somewhere, the length that the soft pipe can insert the blood vessel is longer, can not impale or damage the blood vessel, therefore this pipe live time is longer, the security is higher, this medium length pipe has set up the main bushing and the combination sleeve pipe of interconnect, pipe sliding connection is in main bushing, the pjncture needle is fixed at the interior sleeve pipe lower extreme of combination sleeve pipe and is stretched into in the pipe, the seal wire is connected on the outer tube of thimble assembly and is stretched into in the pjncture needle through drawing the sliding sleeve, consequently, with the seal wire, the pjncture needle, the pipe is constituteed wholly, the operation of pipe is put into to the continuous completion of one person just, therefore the invention is convenient for operation, high durability and convenient use, the efficiency of putting into the pipe has been.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a disposable is through middle length pipe of periphery puncture.
Background
The indwelling needle is frequently used in clinic, and can be indwelling for a long time, so that the vascular injury and mental pain of a patient caused by repeated puncture can be reduced, and the workload of nursing staff in venipuncture is relieved; since the indwelling needle is made of hard material and can not be inserted into the blood vessel too long in order to avoid puncturing the blood vessel, the material and length of the indwelling needle determine the short use time, usually only 1-3 days, and no indwelling needle suitable for long-term use is available in the market at present, so that a medium-length catheter replacing the indwelling needle is necessary to solve the problem.
Currently, the steps for a physician to surgically place a catheter are: firstly, a puncture needle is put in, then a guide wire is slowly inserted along the puncture needle, the puncture needle is pulled out, finally a catheter is inserted into a patient along the guide wire, the guide wire is pulled out after the catheter is properly fixed, and the operation is finished; above-mentioned pjncture needle, seal wire, the pipe for putting into the pipe are usually placed in the toolbox, according to doctor's needs during the use, the nurse delivers pjncture needle, seal wire, pipe one by one for the doctor, and this kind of mode of putting into the pipe needs doctor and nurse cooperation to operate one by one, and the process of consequently putting into the pipe is complicated loaded down with trivial details, can consume a large amount of efforts of doctor, in order to solve foretell problem, it puts into the subassembly to need to design an integral type pipe convenient to operate, convenient to use.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a disposable medium-length catheter through peripheral puncture.
The technical scheme of the utility model is that: a single use peripherally piercing medium length catheter, comprising: the medium-length catheter comprises a cylindrical main sleeve, a combined sleeve, a guide wire assembly, a puncture needle and a catheter assembly;
the side wall of the main sleeve is provided with a square notch A along the axis, one end of the square notch A is close to the upper end face of the main sleeve, the other end of the square notch A penetrates through the lower end face of the main sleeve, the duct assembly is installed in the main sleeve and comprises a conical connector and a transparent duct which is concentrically and fixedly connected with the conical connector, the upper end of the conical connector is concentrically provided with a cylindrical part, the cylindrical part is in sliding connection with the main sleeve to form a sliding pair, and the middle of the outer side wall of the conical connector is provided with a push-pull block positioned between the square notch A; the lower port of the main sleeve is sleeved with a tearable catheter sheath, and the transparent catheter concentrically penetrates out of the tearable catheter sheath;
the combined sleeve comprises a cylindrical inner sleeve and an outer sleeve sleeved on the inner sleeve, wherein a square notch B which penetrates through the upper end face and the lower end face and corresponds to the square notch A is arranged on the inner sleeve along the axis, a positioning hole is formed in the lower end of the side wall of the inner sleeve on the side corresponding to the square notch B, a positioning elastic sheet A of which the outer side face is provided with a square limiting boss A is arranged at the upper end of the inner sleeve, a slope is arranged at the upper end of the limiting boss A, a stepped shaft-shaped connector with a through hole inside is concentrically arranged on the lower end face of the inner sleeve, and the connector is sleeved in the upper end hole; the upper end of the puncture needle is fixed in the through hole of the connector, the lower end of the puncture needle extends into the main sleeve and penetrates through the conical connector to enter the transparent catheter, and the needle head of the puncture needle extends out of the transparent catheter when the conical connector is positioned at the uppermost end in the main sleeve;
a square notch C which is coincident with the square notch B in position and matched with the square notch B in size is arranged on the side wall of the outer sleeve along the axis, one end of the square notch C penetrates through the lower end face of the outer sleeve, the other end of the square notch C is close to the upper end face of the outer sleeve, a square notch D is arranged in the middle of the side wall of the outer sleeve on the side corresponding to the square notch C, the limiting boss A is positioned in the square notch, a stop block is arranged at the upper part of the square notch D, a positioning elastic sheet B is arranged on the outer sleeve at the lower part of the square notch D, a positioning block matched with the positioning;
the guide wire assembly comprises a cylindrical traction sliding sleeve and a guide wire which are sleeved on the outer sleeve, a limiting slide block is arranged on the inner side wall of the traction sliding sleeve along the radial direction inwards, the limiting slide block is positioned in a square notch C to form a sliding pair, a guide wire connecting column concentric with the traction sliding sleeve is arranged on the end face of the limiting slide block, the upper end of the guide wire is fixed in the guide wire connecting column, the lower end of the guide wire is downwards inserted into a puncture needle below the guide wire connecting column, an elastic push-pull handle is arranged on the outer side face of the traction sliding sleeve, and a positioning hook capable of hooking the inner side of a square.
Preferably, the outer side wall of the step shaft-shaped connector is provided with a positioning convex strip along the axis, the upper end of the inner side wall of the main sleeve is provided with a groove along the axis, and the positioning convex strip is clamped into the groove in a matching manner.
Preferably, the circular tube body in the middle of the tearable catheter sheath extends upwards, the extending part is sleeved in the main tube body in a matching mode, a narrow gap is formed in the upper end face of the circular tube body in a downward mode, a wide gap is formed in the upper end face of the side, corresponding to the cutting seam, of the lower opening of the upper end face of the side, two symmetrical elastic blocking pieces are arranged on two sides of the wide gap in an outward mode, and the two elastic blocking pieces are tightly pressed on the main tubes on two sides of the square gap A.
Preferably, an inverted splayed opening is formed in the square notch A at the lower end opening of the main sleeve.
Preferably, the upper end surface of the stepped shaft-shaped connector is internally and concentrically provided with a conical guide groove.
Preferably, the lower end of the outer side wall of the main sleeve is provided with an anti-skid holding block.
Preferably, a sliding plane is arranged on the outer side wall of the Zhu sleeve between the square notch A and the upper end face of the main sleeve.
Preferably, a circular sealing sheet made of elastic material is arranged in the conical joint, and a through cutting seam is arranged in the middle of the sealing gasket.
Preferably, a chamfer is arranged at the lower port of the transparent conduit.
The utility model has the beneficial technical effects that:
the utility model discloses a through medium length pipe in periphery puncture, keep somewhere the needle for traditional, the length that the soft pipe can insert the blood vessel is longer, can not impale or damage the blood vessel, therefore this pipe live time is longer, the security is higher.
The utility model discloses set up the main casing and the combination sleeve pipe of interconnect, pipe sliding connection is in the main casing, and the pjncture needle is fixed at combination sheathed tube interior sleeve pipe lower extreme and is stretched into in the pipe, and the seal wire is connected on the outer tube of sleeve pipe subassembly and is stretched into the pjncture needle through pulling the sliding sleeve in, consequently with seal wire, pjncture needle, pipe combination formula whole, the operation of putting into the pipe just alone can continuous completion, the utility model discloses be convenient for operation, convenient to use have improved the efficiency of putting into the pipe, have reduced doctor's operation burden.
The utility model discloses an outer tube pulls putting into of sliding sleeve realization seal wire along interior sleeve pipe downstream and lapse, and this design can also guarantee the length of delivering of seal wire when having reduced the whole length of product, realizes putting into of pipe through the toper connector in the intraductal lapse of main sleeve, has improved the stability that the pipe was put into.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is one of the schematic three-dimensional structures of the combined casing of the present invention;
fig. 3 is a second schematic perspective view of the assembled bushing of the present invention;
fig. 4 is a schematic perspective view of the inner sleeve according to the present invention;
FIG. 5 is a schematic perspective view of the main sheath and the tearable sheath of the present invention with the guidewire and the needle withdrawal catheter separated;
fig. 6 is a perspective view of a catheter assembly of the present invention;
FIG. 7 is a schematic perspective view of the tearable sheath of the present invention;
fig. 8 is a schematic perspective view of the guide wire assembly of the present invention;
FIG. 9 is a schematic perspective view of a sealing plate;
fig. 10 is a schematic sectional structure view of the initial state of the present invention;
FIG. 11 is an enlarged partial view of FIG. 10;
fig. 12 is a schematic cross-sectional view of the guidewire of the present invention after delivery;
FIG. 13 is an enlarged view at A of FIG. 12;
FIG. 14 is an enlarged view at B of FIG. 12;
figure 15 is a schematic cross-sectional view of the delivery catheter of the present invention;
FIG. 16 is an enlarged partial view of FIG. 15;
FIG. 17 is a schematic view of the configuration of the transparent conduit after attachment of the extension tube to the latch assembly.
01 main sleeve, 11 square notch A, 12 anti-skid holding block, 13 sliding plane, 14 inverted splayed opening, 21 traction sliding sleeve, 211 limiting sliding block, 212 guide wire connecting column, 213 push-pull handle, 214 positioning hook, 22 guide wire, 03 combination sleeve, 31 outer sleeve, 311 square notch C, 312 square notch D, 313 stop, 314 positioning elastic sheet B, 315 positioning block, 316 limiting boss B, 32 inner sleeve, 321 positioning hole, 322 positioning elastic sheet A, 323 limiting boss A, 324 ramp, 325 connector, 326 positioning convex strip, 327 positioning convex strip, 61 conical guide groove, 328 square notch B, 04 puncture needle, 05 guide tube component, 51 conical connector, 52 cylindrical part, 53 push-pull block, 54 transparent guide tube, 55 chamfer, 06 tearable guide tube sheath, 61 circular tube body, 62 narrow notch, 63. Elastic blocking piece, 81 sealing piece, 82 cutting and cutting groove, 91 extending pipe and 92 locking and buckling component.
Detailed Description
Example one, referring to the drawings (1-17) of the specification, a single use peripherally piercing intermediate length catheter, comprising: the medium-length catheter comprises a cylindrical main sleeve, a combined sleeve, a guide wire assembly, a puncture needle and a catheter assembly; the guide pipe assembly is arranged in the main sleeve and comprises a conical connector and a transparent guide pipe which is concentrically and fixedly connected with the conical connector, a cylindrical part is concentrically arranged at the upper end of the conical connector, the cylindrical part is in sliding connection with the main sleeve to form a sliding pair, a push-pull block positioned between the square notch nails is arranged in the middle of the outer side wall of the conical connector, and the guide pipe can be pushed downwards by pushing the push-pull block downwards by hands; the lower port of the main sleeve is sleeved with a tearable catheter sheath, the transparent catheter concentrically penetrates out of the tearable catheter sheath, and the catheter sheath plays a role in guiding the catheter and fixing the conical connector; the conical joint is internally provided with a circular sealing sheet made of elastic material, a through cutting seam is arranged in the middle of the sealing gasket, a puncture needle penetrates through the cutting seam, blood backflow is prevented from flowing out of the conical joint during puncture, the lower end of the outer side wall of the main sleeve is provided with an anti-skidding holding block, the hand feeling of holding is improved, and sliding is prevented from occurring during holding.
The combined sleeve comprises a cylindrical inner sleeve and an outer sleeve sleeved on the inner sleeve, wherein a square notch B which penetrates through the upper end face and the lower end face and corresponds to the square notch A is arranged on the inner sleeve along the axis, a positioning hole is formed in the lower end of the side wall of the inner sleeve on the side corresponding to the square notch B, a positioning elastic sheet A of which the outer side face is provided with a limiting boss A is arranged at the upper end of the inner sleeve, a slope is arranged at the upper end of the limiting boss A, a stepped shaft-shaped connector with a through hole inside is concentrically arranged on the lower end face of the inner sleeve, and the connector is sleeved in the upper end hole; the upper end of the puncture needle is fixed in the through hole of the connector, the lower end of the puncture needle extends into the main sleeve and penetrates through the conical connector to enter the transparent catheter, and the needle head of the puncture needle extends out of the transparent catheter when the conical connector is located at the uppermost end in the main sleeve.
A square notch C which is coincident with the square notch B in position and matched with the square notch B in size is arranged on the side wall of the outer sleeve along the axis, one end of the square notch C penetrates through the lower end face of the outer sleeve, the other end of the square notch C is close to the upper end face of the outer sleeve, a square notch D is arranged in the middle of the side wall of the outer sleeve on the side corresponding to the square notch C, the limiting boss A is positioned in the square notch, a stop block is arranged at the upper part of the square notch D, a positioning elastic sheet B is arranged on the outer sleeve at the lower part of the square notch D, a positioning block matched with; when the outer sleeve moves downwards along the inner sleeve to the lower end of the inner sleeve, the positioning block moves downwards and is clamped into the positioning hole, the limiting boss A on the outer side face of the positioning elastic sheet A can cross the stop block through the slope of the upper end of the limiting boss A, the limiting effect is achieved, and the two sleeves are prevented from slipping.
The guide wire component comprises a cylindrical traction sliding sleeve sleeved on the outer sleeve and a guide wire, wherein a limiting slide block is arranged on the inner side wall of the traction sliding sleeve along the radial direction inwards, when the traction sliding sleeve slides downwards on the outer sleeve, the limiting slide block can prevent the traction sliding sleeve from rotating left and right to ensure the stability of operation, the limiting slide block is positioned in a square notch C to form a sliding pair, a guide wire connecting column concentric with the traction sliding sleeve is arranged on the end surface of the limiting slide block, the upper end of the guide wire is fixed in the guide wire connecting column, the lower end of the guide wire is downwards inserted into a puncture needle below, an elastic push-pull handle is arranged on the outer side surface of the traction sliding sleeve, a positioning hook capable of hooking a square notch A at the upper end of the main sleeve is arranged on the inner side surface of the lower end of the push-pull handle, the positioning hook is used for hooking the upper end of, the upper end of main sleeve pipe inside wall is equipped with the recess along the axis, and the card that the location sand grip matches is gone into in the recess, be equipped with the slip plane on the zhu sleeve pipe lateral wall between square notch first and the main sleeve pipe up end, this slip plane makes the location hook slide into in the square notch first more easily.
The utility model discloses a pipe sheath, including the pipe sheath, the pipe sheath is characterized in that the pipe sheath is equipped with the branch of pipe, the branch of pipe is equipped with the branch of pipe, the branch pipe is equipped with.
The upper end surface of the stepped shaft-shaped connector is internally and concentrically provided with a conical guide groove, so that a guide wire can conveniently enter the puncture needle during assembly; the lower port of the transparent catheter is provided with a chamfer, and the chamfer and the puncture needle form a puncture inclined plane, so that the catheter cannot influence normal puncture.
The utility model discloses a use method is:
puncture needle
The conical connector slides upwards to enable the needle point of the puncture needle to extend out of the lower port of the transparent catheter, the outer sleeve and the traction sliding sleeve slide upwards to withdraw the lower end of the guide wire into the puncture needle, and the puncture needle and the lower end of the main catheter are punctured into the puncture point by holding the lower end of the main sleeve with one hand.
Delivery guidewire
The lower end of the transparent catheter enters the blood vessel from the puncture point together with the puncture needle and can see blood returning in the transparent catheter, the traction sliding sleeve slides downwards to deliver the guide wire by using the other hand, after the lower end face of the traction sliding sleeve is contacted with the limiting boss B on the outer side face of the positioning elastic piece B, the outer sleeve can be driven to slide downwards on the inner sleeve to continue to deliver the guide wire, when the outer sleeve slides to the lower end of the inner sleeve, the positioning block on the inner side face of the positioning elastic piece B can be clamped into the positioning hole to be positioned, the limiting boss A on the outer side face of the positioning elastic piece A can cross the stop block through the slope of the upper end of the positioning elastic piece A to play a limiting role to prevent the two sleeves from slipping, meanwhile, the positioning hook on the traction sliding sleeve can be hooked tightly.
Delivery catheter
After the guidewire delivery is complete, the tapered fitting is pushed down with the other hand until it snaps into the tearable catheter sheath, at which point the catheter is advanced over the guidewire into the vessel, completing the delivery of the catheter.
Separation puncture needle and guide wire
After the catheter delivery is finished, the tearable catheter sheath is pinched by one hand, the lower end of the main catheter is pinched by the other hand, the main catheter and the tearable catheter sheath are separated by pulling upwards, the puncture needle and the guide wire are drawn out, and only the catheter assembly is left in the blood vessel at the moment.
Connecting extension tubes and securing catheter assemblies
The connector of the extension tube is fixedly connected with the conical connector of the catheter component, the outer end of the extension tube is connected with the closed infusion connector, the clamp on the extension connector is closed, then the locking assembly is fastened on the conical connector of the catheter component and is attached to the skin, and the transparent adhesive film is used for attaching the locking assembly.
Claims (9)
1. A single use peripherally piercing medium length catheter, comprising: the medium-length catheter comprises a cylindrical main sleeve, a combined sleeve, a guide wire assembly, a puncture needle and a catheter assembly;
the side wall of the main sleeve is provided with a square notch A along the axis, one end of the square notch A is close to the upper end face of the main sleeve, the other end of the square notch A penetrates through the lower end face of the main sleeve, the duct assembly is installed in the main sleeve and comprises a conical connector and a transparent duct which is concentrically and fixedly connected with the conical connector, the upper end of the conical connector is concentrically provided with a cylindrical part, the cylindrical part is in sliding connection with the main sleeve to form a sliding pair, and the middle of the outer side wall of the conical connector is provided with a push-pull block positioned between the square notch A; the lower port of the main sleeve is sleeved with a tearable catheter sheath, and the transparent catheter concentrically penetrates out of the tearable catheter sheath;
the combined sleeve comprises a cylindrical inner sleeve and an outer sleeve sleeved on the inner sleeve, wherein a square notch B which penetrates through the upper end face and the lower end face and corresponds to the square notch A is arranged on the inner sleeve along the axis, a positioning hole is formed in the lower end of the side wall of the inner sleeve on the side corresponding to the square notch B, a positioning elastic sheet A of which the outer side face is provided with a square limiting boss A is arranged at the upper end of the inner sleeve, a slope is arranged at the upper end of the limiting boss A, a stepped shaft-shaped connector with a through hole inside is concentrically arranged on the lower end face of the inner sleeve, and the connector is sleeved in the upper end hole; the upper end of the puncture needle is fixed in the through hole of the connector, the lower end of the puncture needle extends into the main sleeve and penetrates through the conical connector to enter the transparent catheter, and the needle head of the puncture needle extends out of the transparent catheter when the conical connector is positioned at the uppermost end in the main sleeve;
a square notch C which is coincident with the square notch B in position and matched with the square notch B in size is arranged on the side wall of the outer sleeve along the axis, one end of the square notch C penetrates through the lower end face of the outer sleeve, the other end of the square notch C is close to the upper end face of the outer sleeve, a square notch D is arranged in the middle of the side wall of the outer sleeve on the side corresponding to the square notch C, the limiting boss A is positioned in the square notch, a stop block is arranged at the upper part of the square notch D, a positioning elastic sheet B is arranged on the outer sleeve at the lower part of the square notch D, a positioning block matched with the positioning;
the guide wire assembly comprises a cylindrical traction sliding sleeve and a guide wire which are sleeved on the outer sleeve, a limiting slide block is arranged on the inner side wall of the traction sliding sleeve along the radial direction inwards, the limiting slide block is positioned in a square notch C to form a sliding pair, a guide wire connecting column concentric with the traction sliding sleeve is arranged on the end face of the limiting slide block, the upper end of the guide wire is fixed in the guide wire connecting column, the lower end of the guide wire is downwards inserted into a puncture needle below the guide wire connecting column, an elastic push-pull handle is arranged on the outer side face of the traction sliding sleeve, and a positioning hook capable of hooking the inner side of a square.
2. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: the outer side wall of the step shaft-shaped connector is provided with a positioning convex strip along the axis, the upper end of the inner side wall of the main sleeve is provided with a groove along the axis, and the positioning convex strip is clamped into the groove in a matching mode.
3. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: the utility model discloses a pipe sleeve, including the pipe sheath of tearable pipe, the pipe body in the middle of the pipe sheath stretches out upwards, and the main pipe body is emboliaed in that this protrusion matches, and the up end of circular pipe body is towards having a narrow breach downwards, and the up end of the corresponding side of joint-cutting is towards having a wide breach downwards, and the both sides of this wide breach are equipped with two symmetrical elastic separation blade outwards, and two elastic separation blade compress tightly on the main sleeve pipe of the both sides.
4. A single use peripherally piercing intermediate length catheter as claimed in claim 3, wherein: an inverted splayed opening is formed in the square notch A at the lower end opening of the main sleeve.
5. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: the upper end surface of the step shaft-shaped connector is internally and concentrically provided with a conical guide groove.
6. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: and the lower end of the outer side wall of the main sleeve is provided with an anti-skid holding block.
7. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: and a sliding plane is arranged on the outer side wall of the Zhu sleeve between the square notch A and the upper end face of the main sleeve.
8. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: the conical joint is internally provided with a round sealing sheet made of elastic material, and the middle of the sealing pad is provided with a through cutting seam.
9. A single use peripherally piercing intermediate length catheter as claimed in claim 1, wherein: and a chamfer is arranged at the lower port of the transparent conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020607045.6U CN212522678U (en) | 2020-04-22 | 2020-04-22 | Disposable medium-length catheter for transperipheral puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020607045.6U CN212522678U (en) | 2020-04-22 | 2020-04-22 | Disposable medium-length catheter for transperipheral puncture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212522678U true CN212522678U (en) | 2021-02-12 |
Family
ID=74519683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020607045.6U Active CN212522678U (en) | 2020-04-22 | 2020-04-22 | Disposable medium-length catheter for transperipheral puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212522678U (en) |
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2020
- 2020-04-22 CN CN202020607045.6U patent/CN212522678U/en active Active
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