CN220801676U

CN220801676U - Percutaneous puncture kit

Info

Publication number: CN220801676U
Application number: CN202321303983.7U
Authority: CN
Inventors: 韦刘东; 韦尔奇; 韦博雄
Original assignee: Pls Minimally Invasive Interventional Medical Co ltd
Current assignee: Pls Minimally Invasive Interventional Medical Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2024-04-19
Anticipated expiration: 2033-05-25

Abstract

The utility model relates to the technical field of medical appliances, in particular to a percutaneous puncture kit, which comprises a tearable sheath, wherein the tearable sheath comprises a sheath tube and a connecting arm connected with the end part of the sheath tube, a first tearing groove extending along the axial direction of the sheath tube is formed in the sheath tube, a second tearing groove is formed in the connecting arm, the end part of the second tearing groove is connected with the end part of the first tearing groove, and after the connecting arm is pulled to tear the second tearing groove, the connecting arm drives the first tearing groove to tear, so that the sheath tube is separated from an appliance at the peripheral side of the sleeved appliance. According to the percutaneous puncture kit, the first tearing groove extending along the axial direction is preset on the sheath tube of the tearable sheath, and the second preset groove is matched with the first preset groove on the connecting arm, so that the tearable sheath can form cracks completely according to the preset direction of the tearing groove when being torn, the risk of uneven tearing of the sheath tube is avoided, the sheath tube can be completely withdrawn after each tearing, and great reliability is brought to clinical operation of the tearable sheath.

Description

Percutaneous puncture kit

[ Field of technology ]

The utility model relates to the technical field of medical appliances, in particular to a percutaneous puncture kit.

[ Background Art ]

A percutaneous puncture kit is a medical device for performing percutaneous puncture operation clinically, and is generally composed of a puncture needle, a guide wire, a dilator and a puncture cannula. The puncture cannula has the function of establishing a channel under the outside and human skin after the puncture is finished, enabling the guide wire to pass through the channel through the inner cavity of the puncture needle positioned in the channel and enter the human blood vessel or tissue, enabling the puncture catheter to be generally provided with a tearable sheath, sleeving the guide wire on the guide wire to enter the human blood vessel or tissue along the guide wire through the channel after withdrawing the puncture needle, withdrawing the guide wire when the catheter reaches a designated position, and finally tearing the tearable sheath along the axial direction, so that the tearable sheath does not need to withdraw from the tail part of the guide tube. The sheath tube of the tearable sheath is generally made of TPFE material, two opposite connecting arms are usually connected to the end part of the sheath tube, the two connecting arms are grabbed and applied with a force for separating the connecting arms, the sheath tube can be driven to be separated in a two-split extending mode, but the existing tearable sheath is not provided with a preset tearing direction on the surface of the sheath tube, when the sheath tube is torn, the extending direction of the split is uncertain, the situation that the split is intersected can possibly occur, at the moment, the sheath tube can have a part still sleeved on a catheter and can not be completely withdrawn, and unnecessary troubles are brought to clinical operation. Thus, there is a need for a percutaneous puncture kit having a tearable sheath that facilitates tearing.

[ Invention ]

The utility model aims to provide a percutaneous puncture kit, which solves the problem that the sheath tube of the tearable sheath in the existing percutaneous puncture kit cannot be completely withdrawn after being torn because the preset tearing direction is not set.

The technical scheme provided by the utility model is as follows: the utility model provides a percutaneous puncture external member, includes can tear the sheath, can tear the sheath include the sheath pipe and connect in the linking arm of sheath pipe tip, set up on the sheath pipe along the first tearing groove of axial extension of sheath pipe, set up the second tearing groove on the linking arm, the tip of second tearing groove with the tip of first tearing groove links to each other, and the pulling linking arm makes after the second tearing groove tears, the linking arm drives first tearing groove tears, so that the sheath pipe is in the week side of the apparatus of cover establishing with the apparatus separation.

According to the percutaneous puncture kit, the plurality of pre-tearing openings are formed in the first tearing groove, and the plurality of pre-tearing openings are distributed at intervals along the length direction of the first tearing groove, so that a plurality of connecting points distributed at intervals are formed in the first tearing groove.

The percutaneous puncture kit comprises two first tearing grooves, two second tearing grooves and two connecting arms, wherein the two first tearing grooves are oppositely arranged on the sheath tube, the two second tearing grooves are oppositely arranged on the connecting arms, the two first tearing grooves and the two second tearing grooves are arranged in one-to-one correspondence, and when the two second tearing grooves are torn, the connecting arms are separated into two sections to drive the two first tearing grooves to tear and the sheath tube to be separated into two flaps so as to separate from the instrument.

According to the percutaneous puncture kit, the second tearing groove is provided with the plurality of pre-tearing openings which are distributed at intervals along the length direction of the second tearing groove, so that a plurality of connecting points which are distributed at intervals are formed on the second tearing groove.

The percutaneous puncture kit further comprises a guide needle, wherein the guide needle comprises a needle tube and a guide head, the guide head is connected to one end, far away from the needle head, of the needle tube, the sheath tube is sleeved on the outer side of the needle tube, and a locking mechanism for locking the connecting arm is arranged between the connecting arm and the guide head.

The percutaneous puncture kit comprises the guide head, the connecting arms comprise the first connecting arms and the second connecting arms, the second tearing grooves are formed in the connecting positions of the first connecting arms and the second connecting arms, protruding threads are arranged on the first connecting arms and the second connecting arms, the locking mechanism is provided with the locking sleeve at one end close to the connecting arms, and the locking sleeve is detachably sleeved on one end, far away from the sheath tube, of the first connecting arms and the second connecting arms in the axial direction so as to lock the first connecting arms and the second connecting arms.

According to the percutaneous puncture kit, the first connecting arm and the second connecting arm are respectively provided with the protruding threads, and the inner wall of the locking sleeve is provided with the locking threads which are arranged corresponding to the protruding threads.

According to the percutaneous puncture kit, the locking mechanism is provided with the anti-falling buckle at one end far away from the connecting arm, and the guide head is provided with the clamping groove corresponding to the anti-falling buckle.

According to the percutaneous puncture kit, the anti-falling buckles are arranged in a plurality and distributed around the shaft, and the clamping grooves are arranged around the outer periphery of the guide head.

According to the percutaneous puncture kit, the connecting arms are provided with the plurality of anti-skidding patterns which are arranged in the protruding mode.

Compared with the prior art, the utility model has the following advantages:

According to the percutaneous puncture kit, the first tearing groove extending along the axial direction is preset on the sheath tube of the tearable sheath, and the second preset groove is matched with the first preset groove on the connecting arm, so that the tearable sheath can form cracks completely according to the preset direction of the tearing groove when being torn, the risk of uneven tearing of the sheath tube is avoided, the sheath tube can be completely withdrawn after each tearing, and great reliability is brought to clinical operation of the tearable sheath.

[ Description of the drawings ]

FIG. 1 is a schematic perspective view of the tearable sheath of the present utility model in combination with an introducer needle;

FIG. 2 is a partial elevation view of the tearable sheath of the present utility model in combination with an introducer needle;

FIG. 3 is a partial cross-sectional view of the tearable sheath of the present utility model in combination with an introducer needle;

FIG. 4 is an exploded view of the tearable sheath of the present utility model in combination with a guide needle and a locking mechanism;

Fig. 5 is a schematic diagram of the locking mechanism of the present utility model when the anti-release buckle is locked in the slot after the locking mechanism is released.

[ Detailed description ] of the invention

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Example 1: referring to fig. 1 to 5, the present embodiment provides a percutaneous puncture kit, which includes a tearable sheath 1, the tearable sheath 1 includes a sheath tube 11 and a connecting arm 12 connected to an end portion of the sheath tube 11, a first tearing groove 111 extending along an axial direction of the sheath tube 11 is formed on the sheath tube 11, a second tearing groove 121 is formed on the connecting arm 12, an end portion of the second tearing groove 121 is connected to an end portion of the first tearing groove 111, and after the connecting arm 12 is pulled to tear the second tearing groove 121, the connecting arm 12 drives the first tearing groove 111 to tear, so that the sheath tube 11 is separated from an apparatus at a circumferential side of the apparatus. The percutaneous puncture kit provided by the embodiment adopts the first tearing groove 111 which extends along the axial direction and is preset on the sheath tube 11 of the tearable sheath 1, and the second preset groove 121 which is preset on the connecting arm 12 is matched, so that the tearable sheath 1 can form cracks completely according to the preset direction of the tearing groove when being torn, the risk of uneven tearing of the sheath tube 11 can be avoided, the sheath tube 11 can be completely withdrawn after each tearing, and great reliability is brought to the clinical operation of the tearable sheath 1.

The first tearing groove 111 is provided with a plurality of pre-tearing openings 112, and the pre-tearing openings 112 are distributed at intervals along the length direction of the first tearing groove 111, so that a plurality of connecting points 113 distributed at intervals are formed on the first tearing groove 111. A plurality of pre-tearing openings 112 are formed, so that when the first tearing groove 111 is torn, an operator only needs to apply a pulling force for breaking the plurality of connecting points 113, and the sheath 11 can be torn, so that the tearing operation is more labor-saving.

The two first tearing grooves 111 are arranged on the sheath tube 11 oppositely, the two second tearing grooves 121 are arranged on the connecting arm 12 oppositely, the two first tearing grooves 111 and the two second tearing grooves 121 are arranged in a one-to-one correspondence, and when the two second tearing grooves 121 are torn, the connecting arm 12 is separated into two sections to drive the two first tearing grooves 111 to tear and separate the sheath tube 11 into two flaps so as to separate from the instrument. Two tearing grooves are arranged, so that the tearable sheath 1 can be torn into two preset halves when being torn, the tearable sheath 1 is convenient to withdraw, and meanwhile, the tearing operation is more comfortable and the hand feeling is better.

The second tearing groove 121 is provided with a plurality of pre-tearing openings 112 which are arranged at intervals along the length direction of the second tearing groove 121, so that a plurality of connecting points 113 which are distributed at intervals are formed on the second tearing groove 121. The second tearing groove 121 is provided with the pre-tearing opening 112 as the first tearing groove 111, so that the tearing and separating of the two sections of connecting arms 12 is more labor-saving and convenient.

The percutaneous puncture kit further comprises a guide needle 2, the guide needle 2 comprises a needle tube 21 and a guide head 22, the guide head 22 is connected to one end of the needle tube 21 far away from the needle head, the sheath tube 11 is sleeved outside the needle tube 21, and a locking mechanism 3 for locking the connecting arm 12 is arranged between the connecting arm 12 and the guide head 22. The locking mechanism 3 is provided to lock the tearable sheath 1, thereby preventing the tearable sheath 1 from being accidentally torn by misoperation.

The locking mechanism 3 is movably sleeved on the guide head 22 along the axial direction, the connecting arm 12 comprises a first connecting arm 1201 and a second connecting arm 1202, the second tearing groove 121 is positioned at the joint between the first connecting arm 1201 and the second connecting arm 1202, the first connecting arm 1201 and the second connecting arm 1202 are both provided with the raised threads 122, the locking mechanism 3 is provided with a locking sleeve 31 at one end close to the connecting arm 12, and the locking sleeve 31 is detachably sleeved on one end, far away from the sheath tube 11 in the axial direction, of the first connecting arm 1201 and the second connecting arm 1202 so as to lock the first connecting arm 1201 and the second connecting arm 1202. The locking mechanism 3 locks the first connecting arm 1201 and the second connecting arm 1202 by simultaneously sleeving the locking sleeve 31 on the first connecting arm 1201 and the second connecting arm 1202, so that the first connecting arm 1201 and the second connecting arm 1202 are not easy to tear and separate when locked, and the sheath 11 is not easy to tear and separate.

The first connecting arm 1201 and the second connecting arm 1202 are each provided with a protruding thread 122, and the inner wall of the locking sleeve 31 is provided with a locking thread 32 corresponding to the protruding thread 122. The locking sleeve 31 locks the first connecting arm 1201 and the second connecting arm 1202 more tightly by adopting the matching of the protruding thread 122 and the locking thread 32, and is not easy to loosen.

The lock mechanism 3 has an anti-release catch 33 at an end remote from the connection arm 12, and the guide head 22 has a catch groove 221 provided corresponding to the anti-release catch 33. After the locking mechanism 3 is released, the connecting arm 12 can be moved away along the axial direction of the guide head 22 until the anti-falling buckle 33 of the locking mechanism 3 is clamped in the clamping groove 221, so that the whole locking mechanism 3 is not easy to slide on the guide head 22 to the outer side of the needle tube 21.

Preferably, the plurality of the anti-drop fasteners 33 are provided and distributed around the shaft, and the engaging grooves 221 are provided around the outer peripheral side of the guide head 22. The plurality of anti-falling buckles 33 are arranged, so that the clamping effect of the anti-falling buckles 33 is better, and the clamping grooves 221 are arranged in a surrounding mode, so that the anti-falling buckles 33 can be directly clamped into the clamping grooves 221 no matter how the anti-falling buckles 33 rotate.

Preferably, the connecting arm 12 is provided with a plurality of anti-slip patterns 123 which are arranged in a protruding mode, friction between the connecting arm 12 and fingers of an operator during tearing operation is increased, and tearing of the tearable sheath 1 is more convenient to remove.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A percutaneous puncture kit, characterized by: including tearable sheath (1) and guide pin (2), tearable sheath (1) include sheath pipe (11) and connect in linking arm (12) of sheath pipe (11) tip, set up on sheath pipe (11) along first tearing groove (111) of the axial extension of sheath pipe (11), set up on linking arm (12) second tearing groove (121), the tip of second tearing groove (121) with the tip of first tearing groove (111) links to each other, and pulling linking arm (12) make after second tearing groove (121) tear, linking arm (12) drive first tearing groove (111) tear, so that sheath pipe (11) are in the week side of the apparatus that the cover was established with the apparatus separates, guide pin (2) include needle tubing (21) and guide head (22), linking arm (12) with be equipped with between guide head (22) and be used for locking mechanism (3) of linking arm (12), locking mechanism (3) are equipped with in preventing that link arm (12) are kept away from one end (33).

2. A percutaneous penetration kit according to claim 1, wherein: be equipped with a plurality of mouths (112) of tearing in advance on first tearing groove (111), a plurality of mouths (112) are torn in advance and are followed in advance the length direction of first tearing groove (111) is the interval arrangement, makes a plurality of tie points (113) of interval distribution form on first tearing groove (111).

3. A percutaneous penetration kit according to claim 1, wherein: the utility model discloses a sheath tube, including sheath tube (11), linking arm (12), first tear groove (111) be two, two first tear groove (111) set up relatively on sheath tube (11), second tear groove (121) be two, two second tear groove (121) set up relatively on linking arm (12), two first tear groove (111) with two second tear groove (121) one-to-one sets up, two when second tear groove (121) are torn, linking arm (12) separate into two sections, drive two first tear groove (111) tear and with sheath tube (11) separate into two lamella, in order to break away from the apparatus.

4. A percutaneous penetration kit according to claim 3, wherein: the second tearing groove (121) is provided with a plurality of pre-tearing openings (112) which are arranged at intervals along the length direction of the second tearing groove (121), so that a plurality of connecting points (113) which are distributed at intervals are formed on the second tearing groove (121).

5. A percutaneous penetration kit according to claim 1, wherein: the guide head (22) is connected to one end of the needle tube (21) far away from the needle head, and the sheath tube (11) is sleeved on the outer side of the needle tube (21).

6. A percutaneous penetration kit according to claim 5, wherein: the locking mechanism (3) is movably sleeved on the guide head (22) along the axial direction, the connecting arm (12) comprises a first connecting arm (1201) and a second connecting arm (1202), the second tearing groove (121) is positioned at the joint between the first connecting arm (1201) and the second connecting arm (1202), the locking mechanism (3) is provided with a locking sleeve (31) at one end close to the connecting arm (12), and the locking sleeve (31) is detachably sleeved on one end of the first connecting arm (1201) and one end of the second connecting arm (1202) which is axially far away from the sheath tube (11) so as to lock the first connecting arm (1201) and the second connecting arm (1202).

7. A percutaneous penetration kit according to claim 6, wherein: the first connecting arm (1201) and the second connecting arm (1202) are respectively provided with a raised thread (122), and the inner wall of the locking sleeve (31) is provided with a locking thread (32) which is arranged corresponding to the raised thread (122).

8. A percutaneous penetration kit according to claim 1, wherein: the guide head (22) is provided with a clamping groove (221) which is arranged corresponding to the anti-falling buckle (33).

9. A percutaneous penetration kit according to claim 8, wherein: the anti-falling buckles (33) are arranged in a plurality of ways and distributed around the shaft, and the clamping grooves (221) are arranged around the periphery of the guide head (22).

10. A percutaneous penetration kit according to claim 1, wherein: the connecting arm (12) is provided with a plurality of anti-skid patterns (123) which are arranged in a protruding mode.