CN218745535U - Welding tool for sensor protective shell of catheter pump - Google Patents

Abstract

The utility model relates to the technical field of medical equipment manufacturing, in particular to a catheter pump sensor protective shell welding tool, which comprises a first clamp arm and a second clamp arm, wherein the first clamp arm is provided with a first clamping block, the second clamp arm is provided with a second clamping block, and the first clamp arm and the second clamp arm are used for driving the first clamping block and the second clamping block to match with a clamping workpiece; the utility model discloses a first tong arm and second tong arm drive first grip block and second grip block and match the clamping workpiece, specifically match centre gripping blood flow and go out the cage and treat the sensor protecting crust of welding on the blood flow goes out the cage, make to treat that the firm subsides of welded protecting crust supply welded fastening on the lateral wall that the blood flow goes out the cage, and then use through this welding frock, have guaranteed welding quality's uniformity, have improved the yield of welding efficiency and product simultaneously.

Description

Welding tool for sensor protective shell of catheter pump

Technical Field

The utility model relates to the technical field of medical equipment manufacturing, in particular to catheter pump sensor protective case welding frock.

Background

Catheter pumps, also known as mechanical blood circulation support devices or ventricular assist devices, may be introduced percutaneously into the heart and may be configured to assist or replace natural heart pump function by circulatory pumping or continuous pumping of blood, providing hemodynamic support for cardiogenic shock and acute heart failure.

Catheter pumps generally comprise a blood inflow cage located in the left ventricle, a blood outflow cage located in the aorta, and a blood flow channel for blood flow communication between the blood inflow cage and the blood outflow cage; the outer wall of the blood outflow cage is provided with a sensor and a protective shell for protecting the sensor.

At present, the welding blood outflow cage tooling jig used in a production workshop has the following operation difficulties: 1) The optical fiber protective shell is extremely small and difficult to clamp; 2) During operation, two hands are required to be matched with each other to clamp the blood flowing out of the cage and the protective shell, but the protective shell often falls off or deviates in placement position when being placed on the milling platform due to reasons such as shaking of the two hands; 3) Due to objective factors of the size and the weight of the protective shell, the protective shell is blown away due to the protection of argon protective gas in the welding process; 4) The appearance after welding is not uniform due to different operation proficiency levels of operators; 5) Often causing insufficient soldering; 6) Because the workpiece needs to rotate left and right by about 30 degrees during welding, the protective shell and the blood outflow cage need to rotate integrally at the same time; 7) When the existing tool is operated, the blood flows out of the cage and is easily stressed and deformed due to uneven force application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a catheter pump sensor protective case welding frock.

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

the utility model provides a catheter pump sensor protecting shell welding frock, includes first tong arm and second tong arm, be equipped with first grip block on the first tong arm, be equipped with the second grip block on the second tong arm, first tong arm and second tong arm are used for driving first grip block and second grip block match the centre gripping work piece.

Compared with the prior art, the utility model discloses following technological effect has:

the utility model provides a catheter pump sensor protective case welding frock drives first grip block and second grip block through first tong arm and second tong arm and matches the centre gripping work piece, specifically match centre gripping blood flow and go out the cage and treat the sensor protective case of welding on blood flow goes out the cage, make treat that the welded protective case is firm paste and supply welded fastening on the lateral wall of blood flow goes out the cage, and then use through this welding frock, the uniformity of welding quality has been guaranteed, the yield of welding efficiency and product has been improved simultaneously.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Drawings

Fig. 1 is a schematic structural diagram illustrating a welding tool for a sheath of a catheter pump sensor according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of position A of FIG. 1;

FIG. 3 is a schematic view of the welding fixture of FIG. 1 clamping and holding the blood outflow cage and the protective housing;

FIG. 4 is an enlarged schematic view of position B of FIG. 3;

fig. 5 is a schematic structural diagram illustrating another welding tool for a sheath of a catheter pump sensor according to an embodiment of the present invention;

the numbering in the figures illustrates:

1. blood flows out of the cage; 2. protecting the shell; 10. a first clamp lever; 11. a first plier handle; 12. a first clamp arm; 13. a first clamping block; 14. a first miniature fixture block; 20. a second clamp bar; 21. a second plier handle; 22. a second jawarm; 23. a second clamping block; 24. a second miniature fixture block; 25. positioning the pillar; 30. a groove; 40. a V-shaped spring plate; 41. a return spring.

Detailed Description

In order to make the utility model realize the technical means, creation characteristics, achievement purpose and efficiency are easy to understand and understand, the utility model is further clarified by combining the specific drawings.

It should be noted that, in the present invention, when an element is referred to as being "fixed" to another element, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As before, the utility model provides a catheter pump sensor protective case welding frock, including first tong arm and second tong arm, be equipped with first grip block on the first tong arm, be equipped with the second grip block on the second tong arm, first tong arm and second tong arm are used for driving first grip block and second grip block match the centre gripping work piece.

The utility model provides an among the technical scheme, drive first grip block and second grip block through first tong arm and second tong arm and match the centre gripping work piece, specifically match centre gripping blood flow and go out the cage and treat the sensor protecting crust of welding on blood flow goes out the cage, make to treat that the firm subsides of welded protecting crust supply welded fastening on blood flow goes out the lateral wall of cage, and then through the use of this welding frock, welding quality's uniformity has been guaranteed, the yield of welding efficiency and product has been improved simultaneously.

Furthermore, in the utility model, the opposite sides of the first clamping block and the second clamping block are both provided with grooves, and the blood flow is fixed by the groove clasping clamp when the first clamping block and the second clamping block are close to each other;

the first clamping block is further provided with a first miniature clamping block, the second clamping block is further provided with a second miniature clamping block, and when the first clamping block and the second clamping block are close to each other, the first miniature clamping block and the second miniature clamping block respectively abut against the left side and the right side of the protective shell. When the clamping device is used specifically, blood outflow cage is clamped and fixed through the grooves on the first clamping block and the second clamping block, and the protective shell is abutted and fixed through the first miniature clamping block and the second miniature clamping block, so that the protective shell is attached to the side wall of the blood outflow cage.

The utility model discloses in, the below of the adjacent side of first miniature fixture block and the miniature fixture block of second all has an inclined plane, the inclined plane is 25-40 with welding machine operation platform's contained angle.

The utility model discloses in, still be equipped with the guide post respectively on the looks proximal surface of first grip block and second grip block and constitute the spacing cooperation of direction with the constant head tank.

The following provides a further explanation of the welding tool according to the present invention through specific embodiments.

Example 1

With reference to fig. 1 to 4, the present embodiment provides a catheter pump sensor sheath welding fixture, where the welding fixture includes a first clamp bar 10 and a second clamp bar 20 hinged at a crossing, where the first clamp bar 10 is an integrated structure formed by a first clamp handle 11 and a first clamp arm 12 and extending along a rod length direction, and the second clamp bar 20 is an integrated structure formed by a second clamp handle 21 and a second clamp arm 22 and extending along the rod length direction;

a first clamping block 13 is arranged on one side, close to the second clamp arm 22, of the first clamp arm 12, a second clamping block 23 is arranged on one side, close to the first clamp arm 12, of the second clamp arm 22, grooves 30 are formed in the opposite side faces of the first clamping block 13 and the second clamping block 23, and blood is clamped and fixed to flow out of the cage 1 through the grooves 30 when the first clamping block 13 and the second clamping block 23 are close to each other;

a first micro clamping block 14 is further arranged on the first clamping block 13, a second micro clamping block 24 is further arranged on the second clamping block 23, and when the first clamping block 13 and the second clamping block 23 are close to each other, the first micro clamping block 14 and the second micro clamping block 24 respectively abut against the left side and the right side of the protective shell 2.

Based on the welding frock that this embodiment provided, through lever principle, the operator holds first pincers handle 11 and second pincers handle 21 by hand, only needs very little power can be in the same place with waiting to weld the work piece centre gripping fixed, simultaneously from ergonomic perspective, can liberate operator's one hand, can guarantee going on of welding process better.

Based on the welding frock that this embodiment provided, it is fixed to embrace the clamp to go out cage 1 through set up recess 30 on the opposite flank of first grip block 13 and second grip block 23 to support tightly fixedly to the left and right sides of protective housing 2 through the first miniature fixture block 14 that sets up on first grip block 13 and the miniature fixture block 24 of second that sets up on second grip block 23, make the firm subsides of protective housing 2 paste on the lateral wall of blood outflow cage 1, can the rotation of arbitrary angle when welding both sides leg.

In the embodiment, the grooves 30 arranged on the opposite side surfaces of the first clamping block 13 and the second clamping block 23 are used for clamping and fixing the blood outflow cage 1, so that the whole welding process can be met only by rotating the welding part once, the consistency of welding quality is ensured, and the welding efficiency and the yield of products are improved;

in addition, because the contact surface of the groove 30 and the blood outflow cage 1 is large, the blood outflow cage 1 can be ensured to be stressed uniformly in the operation process, and meanwhile, the grooves 30 on the left side and the right side have a certain moving range when clamping the blood outflow cage 1, so that the clamping requirement can be met, and the problem that the blood outflow cage 1 is damaged due to clamping caused by excessive force can be prevented.

Generally speaking, the welding frock that this embodiment provided is applicable in various laser-beam welding machines, and is nimble convenient, and the operation flexibility is high.

Further, in this embodiment, each of the adjacent side surfaces of the first micro block 14 and the second micro block 24 has an inclined surface, and an included angle between the inclined surface and the operation platform of the welding machine is 30 °.

By arranging the lower parts of the adjacent side surfaces of the first miniature fixture block 14 and the second miniature fixture block 24 as inclined surfaces, when the grooves 30 on the opposite side surfaces of the first clamping block 13 and the second clamping block 23 clamp and fix the blood outflow cage 1, the inclined surfaces on the first miniature fixture block 14 and the second miniature fixture block 24 just abut against the left side and the right side of the protective shell 2, so that the position of the protective shell 2 can be ensured to be symmetrical about the central plane of the milling platform by only giving a proper amount of force.

In this embodiment, the adjacent surfaces of the first holding block 13 and the second holding block 23 are further respectively provided with a positioning post 25 for forming a guiding and limiting fit with a positioning groove (not shown). Through the cooperation of this reference column 25 and constant head tank, the effectual problem that appears the dislocation when first grip block 13 and second grip block 23 centre gripping blood outflow cage 1 that has prevented.

Example 2

The structure of the welding tool in this embodiment is basically the same as that of the welding tool in embodiment 1, except that, as shown in fig. 5, the welding tool does not include the first clamp handle 11 and the second clamp handle 21; the ends of the first clamp arm 12 and the second clamp arm 22 on the same side are connected through a V-shaped spring piece 40, and a return spring 41 is arranged between the first clamp arm 12 and the second clamp arm 22; the rest of the structure is the same as that of the welding tool in the embodiment 1.

When the clamp is used specifically, a workpiece to be welded is clamped and fixed accurately by holding the first clamp arm 12 and the second clamp arm 22 which are connected through the V-shaped spring piece 40 with one hand, and the return spring 41 provides power for moving the first clamp arm 12 and the second clamp arm 22 away from each other.

The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A catheter pump sensor protective shell welding tool is characterized by comprising a first clamp arm and a second clamp arm, wherein a first clamping block is arranged on the first clamp arm, a second clamping block is arranged on the second clamp arm, and the first clamp arm and the second clamp arm are used for driving the first clamping block and the second clamping block to match and clamp a workpiece;

grooves are formed in the opposite side surfaces of the first clamping block and the second clamping block, and blood flowing out of the cage is fixed through the grooves when the first clamping block and the second clamping block are close to each other;

the first clamping block is further provided with a first miniature clamping block, the second clamping block is further provided with a second miniature clamping block, and when the first clamping block and the second clamping block are close to each other, the first miniature clamping block and the second miniature clamping block respectively abut against the left side and the right side of the protective shell.

2. The catheter pump sensor sheath welding tool of claim 1, wherein an inclined surface is arranged below each of adjacent side surfaces of the first miniature fixture block and the second miniature fixture block, and an included angle between each inclined surface and an operating platform of the welding machine is 25-40 degrees.

3. The catheter pump sensor sheath welding tool of claim 1, wherein adjacent surfaces of the first clamping block and the second clamping block are respectively provided with a positioning column and a positioning groove to form guiding and limiting matching.

4. The catheter pump sensor sheath welding tool of claim 1, further comprising a first clamp handle and a second clamp handle, wherein the first clamp handle and the first clamp arm form an integrated structure extending along the length of the rod, the second clamp handle and the second clamp arm form an integrated structure extending along the length of the rod,

the first clamp handle and the first clamp arm form a first clamp rod, the second clamp handle and the second clamp arm form a second clamp rod, and the first clamp rod and the second clamp rod are hinged at the intersection.

5. The catheter pump sensor sheath welding tool according to claim 1, wherein ends of the first clamp arm and the second clamp arm on the same side are connected through a V-shaped spring piece, and a return spring is further arranged between the first clamp arm and the second clamp arm.

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