CN219720815U

CN219720815U - Picking type percutaneous knife through guide wire

Info

Publication number: CN219720815U
Application number: CN202320625390.6U
Authority: CN
Inventors: 张雨薇; 吴年玮; 童南伟; 吕庆国; 李舍予; 刘圣琢
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-09-22
Anticipated expiration: 2033-03-27

Abstract

The utility model relates to the technical field of medical instruments, and discloses a picking type percutaneous dilatation knife through a guide wire, which comprises a sheath, wherein the sheath is provided with a through inner cavity, the inner cavity is used for a guide wire to pass through, the front end facing an operation area is defined as a front end, one end facing an operator is defined as a rear end, the periphery of the front end of the sheath is provided with a blade along the axial direction of the sheath, and the blade edge of the blade faces the rear end of the sheath. According to the skin expanding knife, the inner cavity for the guide wire to pass through is formed in the tube sheath, the picking type blade is arranged at the front end of the tube sheath, when the front end of the tube sheath is fed into the puncture hole through the guide wire, the skin is expanded by pulling backwards, so that the incision of the skin can be consistent with the puncture opening through the guide wire by 100%, and the accuracy of puncture skin expanding is improved.

Description

Picking type percutaneous knife through guide wire

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a picking type percutaneous dilatation knife through a guide wire.

Background

After vascular sheath surgery is performed on a puncture site such as a femoral inguinal puncture site, a subsequent surgical operation such as placement of a vascular stapler or a larger diameter interventional instrument is often required to achieve the next procedure. In general, the skin at the puncture site is not sufficiently widened, and a skin-dilating operation is required. Surgical blades are commonly used for manual operations, i.e., scoring with a knife tip. When the common surgical blade is used for operation, the situation that the skin-expanding incision position is inconsistent with the puncture point position exists, so that the next operation is affected; or there are cases where the site of the skin-extending incision is too large, affecting patient recovery.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the picking type percutaneous dilatation cutter with the guide wire, which improves the accuracy of the position of the percutaneous dilatation incision.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a pick-type percutaneous dilatation knife through guide wire, includes the pipe sheath, the pipe sheath has the inner chamber that link up, the inner chamber supplies the guide wire to pass, and the definition is the front end towards the operation area, towards operator one end as the rear end, the front end periphery of pipe sheath is equipped with the blade along the axial of pipe sheath, the cutting edge of blade is towards the rear end of pipe sheath.

Further, the blade is perpendicular to the side wall of the sheath.

Further, one end of the blade far away from the center of the sheath is a knife back part, and the height of the knife back part is gradually increased from the front end to the rear end.

Preferably, the knife back is in an arc shape smoothly transiting from the front end to the rear end.

Preferably, the knife back is inclined gradually from the front end to the rear end.

Further, a plurality of blades are provided, and the plurality of blades are uniformly distributed along the periphery of the sheath.

Preferably, there are 2 blades.

Preferably, the number of the blades is 3.

Further, the diameter of the front end of the sheath is smaller than the diameter of the rear end.

Compared with the prior art, the utility model has the beneficial effects that:

according to the skin expanding knife, the front end of the tube sheath is fed into the puncture hole through the guide wire, and the skin is expanded by pulling backwards, so that the skin expanding incision is consistent with the puncture hole through the guide wire, and the situation that the skin expanding incision is inconsistent with the puncture hole through the guide wire when the skin expanding knife is operated by hand clinically is avoided.

The skin expanding knife adopts a picking (inverted cutting) mode to expand the skin, when the tube sheath is placed, the skin elasticity can be utilized, the back of the knife can be used for expanding tissues below the epidermis, the skin around the puncture point can be expanded, then the skin is lifted up for expanding, the incision is shallower, and the recovery of a patient is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

fig. 2 is an enlarged schematic view of fig. 1 at the dashed box.

Reference numerals: 1-sheath, 2-inner cavity, 3-blade, 4-blade and 5-blade back.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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 be within the scope of the utility model.

The utility model provides a pick-type percutaneous dilatation knife through guide wire, as shown in fig. 1 and 2, includes the pipe sheath 1, pipe sheath 1 has a cavity 2 that link up, cavity 2 supplies the guide wire to pass, and the definition is towards the operation region and is the front end, towards operator one end is the rear end, the front end periphery of pipe sheath 1 is equipped with blade 3 along the axial of pipe sheath 1, the cutting edge 4 of blade 3 is towards the rear end of pipe sheath 1.

Further, the blade 3 is perpendicular to the side wall of the sheath 1; the end, far away from the center of the sheath 1, of the blade 3 is provided with a knife back part 5, and the height of the knife back part 5 is gradually increased from the front end to the rear end; preferably, the knife back 5 is in an arc shape smoothly transiting from the front end to the rear end; in another preferred embodiment, the back 5 has a slope shape increasing from the front end to the rear end.

Further, a plurality of blades 3 are provided, and the plurality of blades 3 are uniformly distributed along the outer circumference of the sheath 1, and in particular, the number of the blades 3 may be 2, 3 or 4.

Further, the diameter of the front end of the tube sheath 1 is smaller than that of the rear end, which is more beneficial to clinical operation.

According to the skin expanding knife, the inner cavity for the guide wire to pass through is formed in the tube sheath, the picking type blade is arranged at the front end of the tube sheath, when the front end of the tube sheath is fed into the puncture hole through the guide wire, the skin is expanded by pulling backwards, so that the incision of the expanded skin is consistent with the puncture hole through the guide wire by 100%, and the situation that the incision of the expanded skin is inconsistent with the puncture hole through the guide wire when the hand operation of the skin breaking knife is adopted clinically is avoided.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A picking type percutaneous dilatation knife through a guide wire, which is characterized in that: including the pipe sheath (1), pipe sheath (1) have inner chamber (2) that link up, inner chamber (2) supply guide wire to pass, define towards the operation region for the front end, towards operator one end for the rear end, the front end periphery of pipe sheath (1) is equipped with blade (3) along the axial of pipe sheath (1), blade (4) of blade (3) are towards the rear end of pipe sheath (1).

2. The picker-guided wire skin spreading cutter according to claim 1, wherein: the blade (3) is perpendicular to the side wall of the sheath (1).

3. The picker-guided wire skin spreading cutter according to claim 2, wherein: one end of the blade (3) far away from the center of the tube sheath (1) is a knife back (5), and the height of the knife back (5) is gradually increased from the front end to the rear end.

4. A picker-guide-wire skin spreading cutter according to claim 3, wherein: the knife back (5) is in an arc shape smoothly transiting from the front end to the rear end.

5. A picker-guide-wire skin spreading cutter according to claim 3, wherein: the knife back (5) is in a slope shape gradually increasing from the front end to the rear end.

6. The picker-guided wire skin spreading cutter according to claim 1, wherein: the blades (3) are provided with a plurality of blades (3) which are uniformly distributed along the periphery of the sheath (1).

7. The picker-guided wire skin spreading cutter according to claim 6, wherein: the number of the blades (3) is 2.

8. The picker-guided wire skin spreading cutter according to claim 6, wherein: the number of the blades (3) is 3.

9. The picker-guided wire skin spreading cutter according to claim 1, wherein: the diameter of the front end of the tube sheath (1) is smaller than that of the rear end.