Rotary cutting type blood vessel puncher

Abstract

The utility model relates to the technical field of medical instruments, in particular to a rotary cutting type blood vessel puncher. Comprising a puncher sleeve, a shearing part is embedded in one end of the puncher sleeve, a puncher tool apron is arranged in the puncher sleeve, an adjusting pull rod is arranged in the puncher sleeve, the surface of the puncher sleeve is sleeved with a protective outer sleeve, a puncher liner tube is arranged at one end of the puncher sleeve, and a cutting part is arranged at the other end of the puncher liner tube. A puncher lining cap is arranged at one end of the puncher sleeve, two sets of first convex lugs are arranged on the surface of the protective outer sleeve, two sets of limiting sliding grooves are formed in the surface of the protective outer sleeve, movable rectangular blocks are arranged in the limiting sliding grooves, and a plurality of sets of stable supporting rods are arranged in the limiting sliding grooves; second convex lugs are attached to the surfaces of the limiting sliding grooves, and two sets of telescopic springs are symmetrically arranged in the limiting sliding grooves. According to the embodiment, adjustment can be conducted according to the thicknesses of fingers of different doctors, and using is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a rotary cutting type blood vessel puncher. Background Art

[0002] A vascular punch is an instrument used to punch holes in veins and arteries to facilitate anastomosis of the veins or arteries. It is a commonly used instrument in clinical surgery.

[0003] After searching, in the prior art, Chinese patent announcement number: CN208677514U, authorization date: 2019-04-02, discloses a disposable blood vessel puncher, including a cannula, an annular cutting knife at the front end of the cannula and a knife seat that can move back and forth along the axial direction of the cannula in the cannula, the knife seat includes a mating part that slides with the inner wall of the annular cutting knife, and a knife seat that realizes cutting when the front end of the mating part contacts the annular cutting knife. The knife seat and the mating part are connected by a connecting part, and the outer diameter of the connecting part is smaller than the outer diameter of the mating part. A pull rod for pulling the knife seat to move is provided in the cannula, and the front end of the pull rod and the rear end of the knife seat are fixedly connected by integral injection molding, and the rear end of the cannula is provided with a driving reset mechanism for driving the pull rod to move back and forth along the axial direction of the cannula.

[0004] However, the device still has the following defects: although the above embodiment is easy to use and has high accuracy in perforating blood vessels, the handle of the device is unstable and easily detached, and cannot be adjusted according to the thickness of the fingers of different doctors. Utility Model Content

[0005] In response to the above problems, the present invention provides a rotary cutting type blood vessel punch, comprising a punch sleeve, one end of which is embedded with a shearing portion, a punch knife seat provided inside the punch sleeve, an adjustment pull rod provided inside the punch sleeve, an adjustment shaft rod provided inside the punch sleeve, a protective jacket sleeved on the surface of the punch sleeve, a punch liner provided at one end of the punch sleeve, and a punch liner cap provided at one end of the punch sleeve;

[0006] The surface of the protective jacket is provided with two groups of first lugs, the surface of the protective jacket is opened with two groups of limiting slide grooves, the surface of the punch sleeve is provided with a fixed thread, the interior of the punch liner is provided with a limiting spring, the interior of the limiting slide groove is provided with a movable rectangular block, the interior of the limiting slide groove is provided with several groups of stabilizing support rods, the surface of the limiting slide groove is fitted with a second lug, and the interior of the limiting slide groove is symmetrically provided with two groups of telescopic springs.

[0007] Furthermore, the shearing portion is slidably engaged with the end of the punch sleeve, the punch holder is located inside the shearing portion, and the central axes of the punch sleeve, the shearing portion and the punch holder are all coincident.

[0008] Furthermore, one end of the adjustment rod is connected to one end of the punch knife holder, the adjustment rod is slidingly fitted inside the punch sleeve, one end of the adjustment shaft is connected to the adjustment rod, and the protective jacket is located at the end of the punch sleeve and away from one end of the punch knife holder.

[0009] Furthermore, the outer wall of one end of the puncher liner is slidably fitted with the inner wall of one end of the puncher sleeve, the puncher liner cap is sleeved on one end of the puncher liner, and a limit pin is provided on the surface of the puncher sleeve, and the limit pin passes through the surface of the protective jacket.

[0010] Furthermore, the two groups of the first lugs are symmetrically arranged with the central axis of the protective jacket as the center, and the two groups of the limiting slide grooves are respectively located directly below the two groups of first lugs. An annular cutting knife is provided inside the shearing part, and the annular cutting knife is sleeved on the surface of the puncher knife seat. The protective jacket is movably connected to the puncher sleeve through a fixed thread.

[0011] Furthermore, the movable rectangular block is slidably fitted with the inner wall of the limiting slide, and several groups of the stabilizing support rods are respectively located on the opposite side walls of the movable rectangular block, and the inner side of the limiting slide is slidably fitted with connecting support rods.

[0012] Furthermore, one end of the connecting rod is connected to the movable rectangular block, and the other end of the connecting rod is connected to the second lug, and the second lug is symmetrically arranged with the first lug, and one end of the two groups of telescopic springs are respectively connected to the inner wall of the limiting slide groove.

[0013] Furthermore, two groups of second connecting blocks are symmetrically provided inside the limiting slide groove, and the two groups of second connecting blocks are respectively connected to one end of several groups of stabilizing support rods, and the two groups of second connecting blocks are respectively connected to one end of two groups of telescopic springs.

[0014] The beneficial effects of the utility model are:

[0015] 1. A protective jacket is provided through the surface of the punch sleeve, and a fixed thread is provided through the surface of the punch sleeve. The protective jacket and the punch sleeve are movably connected through the fixed thread, which facilitates the installation or removal and replacement of the protective jacket. Several groups of stabilizing support rods are provided inside the limiting slide groove, and are connected to the movable rectangular block through the several groups of stabilizing support rods, thereby improving the connection stability of the two groups of second lugs while achieving the effect of improving the safety of equipment use.

[0016] 2. Two groups of limiting grooves are provided on the surface of the protective jacket, and the two groups of limiting grooves are respectively located directly below the two groups of first lugs. A second lug is provided on the surface of the limiting groove, and the second lug is symmetrically arranged with the first lug to improve the stability of the doctor in taking the punch. A movable rectangular block is provided inside the limiting groove, and two groups of telescopic springs are symmetrically provided inside the limiting groove. By adjusting the positions of the two groups of second lugs, it is convenient for different doctors to use while achieving the effect of improving the practicality of the equipment.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Shows a structural schematic diagram according to an embodiment of the present utility model;

[0020] Figure 2 A schematic cross-sectional view of a hole punch according to an embodiment of the present utility model is shown;

[0021] Figure 3 A schematic cross-sectional view of a position limiting sliding groove according to an embodiment of the present utility model is shown.

[0022] In the figure: 1. Punch sleeve; 2. Shearing part; 3. Punch knife holder; 4. Adjusting rod; 5. Adjusting shaft; 6. Protective jacket; 7. Punch liner; 8. Punch liner cap; 9. Limit pin; 10. First lug; 11. Limiting slide; 12. Annular cutter; 13. Fixing thread; 14. Limiting spring; 15. First connecting block; 16. Moving rectangular block; 17. Stabilizing support rod; 18. Connecting support rod; 19. Second lug; 20. Telescopic spring; 21. Second connecting block. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] The present invention provides a rotary cutting blood vessel puncher, comprising a puncher sleeve 1; illustratively, as Figure 1-3 shown.

[0025] One end of the punch sleeve 1 is embedded with a shearing portion 2, and the shearing portion 2 is slidably engaged with the end of the punch sleeve 1. A punch knife holder 3 is provided inside the punch sleeve 1, and the punch knife holder 3 is located inside the shearing portion 2, and the central axes of the punch sleeve 1, the shearing portion 2 and the punch knife holder 3 all coincide. An adjusting rod 4 is provided inside the punch sleeve 1, and one end of the adjusting rod 4 is connected to one end of the punch knife holder 3;

[0026] The adjusting rod 4 is slidably fitted with the interior of the punch sleeve 1, an adjusting shaft 5 is provided inside the punch sleeve 1, one end of the adjusting shaft 5 is connected to the adjusting rod 4, a protective jacket 6 is sleeved on the surface of the punch sleeve 1, the protective jacket 6 is located at the end of the punch sleeve 1 and away from one end of the punch knife seat 3, a punch liner 7 is provided at one end of the punch sleeve 1, and a punch liner cap 8 is provided at one end of the punch sleeve 1;

[0027] The outer wall of one end of the punch liner 7 is slidably connected to the inner wall of one end of the punch sleeve 1, and the punch liner cap 8 is sleeved on one end of the punch liner 7. A limit pin 9 is provided on the surface of the punch sleeve 1, and the limit pin 9 passes through the surface of the protective jacket 6. The surface of the protective jacket 6 is provided with two groups of first lugs 10, and the two groups of first lugs 10 are symmetrically arranged with the central axis of the protective jacket 6 as the center;

[0028] Two groups of limiting grooves 11 are provided on the surface of the protective jacket 6, and the two groups of limiting grooves 11 are respectively located directly below the two groups of first lugs 10. An annular cutting knife 12 is provided inside the shearing portion 2, and the annular cutting knife 12 is sleeved on the surface of the puncher knife seat 3. A fixing thread 13 is provided on the surface of the puncher sleeve 1, and the protective jacket 6 is movably connected to the puncher sleeve 1 through the fixing thread 13. A limiting spring 14 is provided inside the puncher liner 8;

[0029] A first connecting block 15 is provided inside the punch liner 7, and the first connecting block 15 is connected to one end of the limit spring 14, and the other end of the first connecting block 15 is connected to one end of the adjustment shaft 5. A movable rectangular block 16 is provided inside the limit slide 11, and the movable rectangular block 16 is slidably connected to the inner wall of the limit slide 11. A plurality of groups of stabilizing support rods 17 are provided inside the limit slide 11, and the plurality of groups of stabilizing support rods 17 are respectively located on the opposite side walls of the movable rectangular block 16;

[0030] The interior of the limiting slide 11 is slidably fitted with a connecting rod 18, and the surface of the limiting slide 11 is fitted with a second lug 19. One end of the connecting rod 18 is connected to the movable rectangular block 16, and the other end of the connecting rod 18 is connected to the second lug 19. The second lug 19 is symmetrically arranged with the first lug 10. Two groups of telescopic springs 20 are symmetrically arranged inside the limiting slide 11, and one end of the two groups of telescopic springs 20 is respectively connected to the inner wall of the limiting slide 11;

[0031] Two groups of second connecting blocks 21 are symmetrically provided inside the limiting slide 11 , and the two groups of second connecting blocks 21 are respectively connected to one end of several groups of stabilizing support rods 17 , and the two groups of second connecting blocks 21 are respectively connected to one end of two groups of telescopic springs 20 .

[0032] Specifically, two groups of limiting grooves 11 are provided on the surface of the protective coat 6, and the two groups of limiting grooves 11 are respectively located directly below the two groups of first lugs 10. A second lug 19 is provided on the surface of the limiting groove 11, and the second lug 19 is symmetrically arranged with the first lug 10 to improve the stability of the doctor in taking the punch. A movable rectangular block 16 is provided inside the limiting groove 11, and two groups of telescopic springs 20 are symmetrically provided inside the limiting groove 11. By adjusting the positions of the two groups of second lugs 19, the purpose of facilitating use by different doctors is achieved.

[0033] A protective jacket 6 is provided through the surface of the punch sleeve 1, and a fixed thread 13 is provided through the surface of the punch sleeve 1. The protective jacket 6 and the punch sleeve 1 are movably connected through the fixed thread 13, which facilitates the installation or removal and replacement of the protective jacket 6. Several groups of stabilizing support rods 17 are provided inside the limiting slide groove 11, and are connected to the movable rectangular block 16 through several groups of the stabilizing support rods 17 to improve the connection stability of the two groups of the second lugs 19.

[0034] The working principle of the rotary cutting blood vessel punch proposed in the embodiment of the present invention is as follows:

[0035] Two groups of limiting slides 11 are provided on the surface of the protective jacket 6. The two groups of limiting slides 11 are respectively located directly below the two groups of first lugs 10. A second lug 19 is provided on the surface of the limiting slide 11. The second lug 19 is symmetrically arranged with the first lug 10 to improve the stability of the doctor in taking the punch. A movable rectangular block 16 is provided inside the limiting slide 11. Two groups of telescopic springs 20 are symmetrically provided inside the limiting slide 11. By adjusting the positions of the two groups of second lugs 19, the purpose of facilitating use by different doctors is achieved.

[0036] A protective jacket 6 is provided through the surface of the punch sleeve 1, and a fixed thread 13 is provided through the surface of the punch sleeve 1. The protective jacket 6 and the punch sleeve 1 are movably connected through the fixed thread 13, which facilitates the installation or removal and replacement of the protective jacket 6. Several groups of stabilizing support rods 17 are provided inside the limiting slide groove 11, and are connected to the movable rectangular block 16 through the several groups of stabilizing support rods 17 to improve the connection stability of the two groups of second lugs 19.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rotary cutting blood vessel puncher, comprising a puncher sleeve (1), characterized in that: One end of the punch sleeve (1) is embedded with a shearing portion (2), the interior of the punch sleeve (1) is provided with a punch knife seat (3), the interior of the punch sleeve (1) is provided with an adjusting pull rod (4), the interior of the punch sleeve (1) is provided with an adjusting shaft rod (5), the surface of the punch sleeve (1) is sleeved with a protective jacket (6), one end of the punch sleeve (1) is provided with a punch liner (7), and one end of the punch sleeve (1) is provided with a punch liner cap (8); The surface of the protective jacket (6) is provided with two groups of first lugs (10), the surface of the protective jacket (6) is provided with two groups of limiting slides (11), the surface of the punch sleeve (1) is provided with a fixing thread (13), the interior of the punch liner (8) is provided with a limiting spring (14), the interior of the limiting slide (11) is provided with a movable rectangular block (16), the interior of the limiting slide (11) is provided with several groups of stabilizing support rods (17), the surface of the limiting slide (11) is fitted with a second lug (19), and the interior of the limiting slide (11) is symmetrically provided with two groups of telescopic springs (20).

2. The rotary cutting blood vessel punch according to claim 1, characterized in that: The shearing portion (2) is slidably engaged with the end of the punch sleeve (1), the punch knife seat (3) is located inside the shearing portion (2), and the central axes of the punch sleeve (1), the shearing portion (2) and the punch knife seat (3) all coincide.

3. The rotary cutting blood vessel punch according to claim 2, characterized in that: One end of the adjusting rod (4) is connected to one end of the puncher blade holder (3), the adjusting rod (4) is slidably fitted inside the puncher sleeve (1), one end of the adjusting shaft (5) is connected to the adjusting rod (4), and the protective jacket (6) is located at the end of the puncher sleeve (1) and away from one end of the puncher blade holder (3).

4. The rotary cutting blood vessel punch according to claim 1, characterized in that: The outer wall of one end of the punch liner (7) is slidably connected to the inner wall of one end of the punch sleeve (1), and the punch liner cap (8) is sleeved on one end of the punch liner (7). A limit pin (9) is provided on the surface of the punch sleeve (1), and the limit pin (9) passes through the surface of the protective jacket (6).

5. The rotary cutting blood vessel punch according to claim 2, characterized in that: The two groups of the first lugs (10) are symmetrically arranged with the central axis of the protective jacket (6) as the center, and the two groups of the limiting slide grooves (11) are respectively located directly below the two groups of the first lugs (10). An annular cutting knife (12) is provided inside the shearing portion (2), and the annular cutting knife (12) is sleeved on the surface of the punch knife seat (3). The protective jacket (6) is movably connected to the punch sleeve (1) through a fixed thread (13).

6. The rotary cutting blood vessel punch according to claim 2, characterized in that: The movable rectangular block (16) is slidably connected to the inner wall of the limiting slide groove (11), and a plurality of groups of stabilizing support rods (17) are respectively located on the opposite side walls of the movable rectangular block (16). The interior of the limiting slide groove (11) is slidably connected with a connecting support rod (18).

7. The rotary cutting blood vessel punch according to claim 6, characterized in that: One end of the connecting rod (18) is connected to the movable rectangular block (16), and the other end of the connecting rod (18) is connected to the second lug (19), and the second lug (19) and the first lug (10) are symmetrically arranged, and one end of the two groups of telescopic springs (20) are respectively connected to the inner wall of the limiting sliding groove (11).

8. The rotary cutting blood vessel punch according to claim 6, characterized in that: Two groups of second connecting blocks (21) are symmetrically arranged inside the limiting sliding groove (11), and the two groups of second connecting blocks (21) are respectively connected to one end of a plurality of groups of stabilizing support rods (17), and the two groups of second connecting blocks (21) are respectively connected to one end of two groups of telescopic springs (20).

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