Vascular suturing device capable of automatically cutting off sutures

Abstract

The utility model discloses a blood vessel suturing device capable of automatically cutting off sutures, which comprises a sheathing canal, a cutting mechanism, a shell and a piston, the cutting mechanism is arranged in the shell and comprises a blade and an elastic element, one end of the elastic element is abutted against the shell, and the other end of the elastic element is abutted against the blade; a hard needle and an angle pin are arranged on the piston, a suture line is connected to the hard needle, the hard needle is driven to move forwards towards a host or be pulled out to complete blood vessel suture work, an inclined plane which is in sliding abutting connection with the blade is formed on the angle pin, and the blade can slide up and down along the inclined plane along with advancing or retreating of the piston. The cutting mechanism composed of the blade and the elastic element is arranged, meanwhile, the angle pin capable of being in linkage with the blade is further arranged, and when the piston is pulled out, the angle pin can be driven to move outwards, so that the blade in linkage with the angle pin slides inwards under the elastic effect of the elastic element; therefore, the blade abuts against the cutting platform to complete cutting of the suture.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of blood vessel suturing device of automatic cutting suture. BACKGROUND

[0002] In the field of blood vessel suturing technology, it is usually necessary to puncture the blood vessel with a hard needle to pass the connected suture through the blood vessel wall for suturing work, and then the hard needle is extracted and separated from the suture.

[0003] In the above process, the suture needs to be cut after completing the blood vessel suturing. The suture cutting window of the prior art is close to the middle section of the suturing device. When the user needs to cut, the suture first needs to be wound around the rear part of the device, and then the suture is wound to the cutting edge. After pulling the suture, the suture is cut. However, during the cutting process, the suture may be wound in the shell or other protruding structure, causing difficulty in operation or cutting the suture in the wrong position. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a blood vessel suturing device capable of automatically cutting suture, which can automatically cut the suture when the user pulls out the suture, without the need for additional cutting action by the user.

[0005] The utility model is implemented by the following technical solutions:

[0006] A blood vessel suturing device capable of automatically cutting suture, comprising a housing and a suturing mechanism at least partially disposed in the housing, the blood vessel suturing device further comprising a cutting mechanism disposed in the housing;

[0007] The cutting mechanism comprises a blade and an elastic element, the housing is provided with a receiving portion, the elastic element is disposed in the receiving portion, and one end of the elastic element abuts against the bottom wall forming the receiving portion, and the other end abuts against the blade;

[0008] The suturing mechanism comprises a piston and a hard needle, the hard needle is fixedly connected with the piston, the hard needle is also connected with a suture, and the hard needle is driven to advance or retract towards the host to complete the blood vessel suturing work, the piston is provided with an inclined pin, and the inclined pin slidably abuts against the blade;

[0009] When the user pulls out the piston, the blade moves towards the suture direction under the elastic force of the elastic element to complete the cutting of the suture.

[0010] Further, a first sliding groove is formed in the receiving portion, and the blade is at least partially disposed in the first sliding groove and can slide along the first sliding groove.

[0011] Further, the shell is provided with a cutting platform capable of abutting against the blade, and the blade is capable of abutting against the cutting platform to complete the cutting action when the piston is pulled out.

[0012] Further, the blade is provided with a groove, the inclined pin is slidably arranged through the groove, and the inclined pin is provided with an inclined surface, and the blade slidably abuts against the inclined surface.

[0013] Further, the blade is provided with an opening, the inclined pin is slidably arranged through the opening, and a first plane of the opening abuts against the inclined surface.

[0014] Further, the blade is further provided with an abutting portion arranged in the accommodating portion, and the other end of the elastic element abuts against the abutting portion.

[0015] Further, the shell is provided with a second sliding groove, and the inclined pin is at least partially arranged in the second sliding groove and is capable of sliding along the second sliding groove.

[0016] Further, the cutting platform is provided with a cutting groove, and a blade edge of the blade is at least partially accommodated in the cutting groove.

[0017] Further, the shell comprises a first shell, and the accommodating portion and the second sliding groove are arranged on the first shell.

[0018] Further, the shell further comprises a second shell clamped with the first shell, and the cutting platform is arranged on the second shell.

[0019] Compared with the prior art, the blood vessel suturing device has the following advantages.

[0020] 1. The cutting mechanism composed of the blade and the elastic element is arranged, and the inclined pin capable of cooperating with the blade is further arranged, the inclined pin is driven to move outward when the piston is pulled out, the blade cooperated with the inclined pin is slid inward under the elastic action of the elastic element, the blade abuts against the cutting platform to complete the cutting of the suture, the medical staff can complete the cutting of the suture when the piston is pulled out, the suture does not need to be wound to the external cutting component to complete the cutting, and the operation of the medical staff is greatly facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the blood vessel suturing device capable of automatically cutting the suture according to an embodiment of the present application;

[0022] Figure 2 It is a partial exploded view of the blood vessel suturing device capable of automatically cutting the suture according to an embodiment of the present application;

[0023] Figure 3 Another part of the explosion map of the blood vessel suturing device capable of automatically cutting off the suture according to an embodiment of the present application;

[0024] Figure 4 The partial cross-sectional view of the blood vessel suturing device capable of automatically cutting off the suture according to an embodiment of the present application;

[0025] Figure 5 The first shell structure schematic view of the blood vessel suturing device capable of automatically cutting off the suture according to an embodiment of the present application;

[0026] Figure 6 The blade structure schematic view of the blood vessel suturing device capable of automatically cutting off the suture according to an embodiment of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, piston; 10, hard needle; 11, inclined pin; 110, inclined surface; 12, suture; 13, push rod; 14, push handle sleeve; 2, cutting mechanism; 20, blade; 201, opening; 202, first plane; 203, abutting portion; 21, elastic element; 3, shell; 30, accommodating portion; 301, bottom wall; 302, first sliding groove; 31, cutting platform; 32, second sliding groove; 33, first shell; 34, second shell; 4, suturing mechanism; 40, sheath tube; 41, connecting piece; 42, trigger. DETAILED DESCRIPTION

[0028] The utility model technical scheme will be further described in detail below in combination with the preferred embodiments and the drawings. In the description of the utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the directions or positional relationships shown in the drawings. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0029] As Figure 1 With Figure 2As shown, the blood vessel suturing device capable of automatically cutting sutures provided by the embodiment of the utility model, including casing 3, at least part setting in casing 3's suturing mechanism 4 and setting in casing 3's cutting mechanism 2.

[0030] Further referring to Figure 3 And Figure 4 , casing 3 includes first shell 33 and the second shell 34 of first shell 33 clamping, and first shell 33 and second shell 34 are clamped by tenon and mortise each other.Casing 3 is provided with accommodating portion 30 and cutting platform 31, specifically, in this embodiment, it is provided with accommodating portion 30 on first shell 33, and cutting platform 31 is provided on second shell 34.

[0031] Cutting mechanism 2 includes blade 20 and elastic element 21, and elastic element 21 is arranged in accommodating portion 30, and one end of elastic element 21 is in abutment with the bottom wall 301 forming accommodating portion 30, and the other end is in abutment with blade 20.Specifically, referring to Figure 5 And Figure 6 , blade 20 is also formed with abutment portion 203, and elastic element 21 and abutment portion 203 are arranged in accommodating portion 30, and one end of elastic element 21 is in abutment with the bottom wall 301 forming accommodating portion 30, and the other end is in abutment with abutment portion 203.Blade 20 can slide along accommodating portion 30.Specifically, first sliding groove 302 is formed in accommodating portion 30, and blade 20 is at least partially arranged in first sliding groove 302 and can slide along first sliding groove 302, and blade 20 can be in abutment with cutting platform 31.Cutting platform 31 is also formed with cutting groove, and the cutting edge of blade 20 can be at least partially accommodated in the cutting groove.In this embodiment, elastic element 21 is a spring, which can also be other elastic members or driving members.

[0032] Suturing mechanism 4 includes piston 1 and hard needle 10, and hard needle 10 is fixedly connected with piston 1, and hard needle 10 is also connected with suture 12 and driven to advance or retract towards the host to complete the blood vessel suturing work.Specifically, suturing mechanism 4 further includes sheath tube 40, connecting piece 41 and trigger 42, sheath tube 40 is linked and matched with trigger 42 through connecting piece 41, trigger 42 is at least partially arranged in casing 3 and can rotate around the first end, and rotating trigger 42 can make the middle part of sheath tube 40 open and abut against the blood vessel wall.Hard needle 10 can slide through connecting piece 41 and sheath tube 40 in sequence and is driven to advance or retract towards the host to complete the blood vessel suturing work.

[0033] Piston 1 is provided with inclined pin 11, and inclined pin 11 is slidably in abutment with blade 20, and blade 20 can slide up and down along inclined pin 11 with the advancement or retreat of piston 1.When the user pulls out piston 1, blade 20 moves towards the direction of suture 12 under the elastic force of elastic element 21 to complete the cutting of suture 12.

[0034] Specifically, the piston 1 comprises a push rod 13 and a push handle sleeve 14, the push handle sleeve 14 and the push rod 13 are detachably connected, and the inclined pin 11 is formed on the push handle sleeve 14. The inclined pin 11 is formed with an inclined surface 110, and the blade 20 is slidably abutted with the inclined surface 110. More specifically, the blade 20 is formed with an opening 201, the inclined pin 11 is slidably penetrated through the opening 201, and a first plane 202 of the opening 201 is abutted with the inclined surface 110. The blade 20 can be abutted with the cutting platform 31 to complete the cutting action when the piston 1 is pulled out.

[0035] In addition, the second sliding groove 32 is formed in the shell 3, specifically in the first shell 33, and the inclined pin 11 is at least partially arranged in the second sliding groove 32 and can slide along the second sliding groove 32. The stability of the piston 1 during movement is increased.

[0036] In use, the user first rotates the trigger 42 to open, pushes the piston 1 to abut with the shell 3 completely, and then pulls out the piston 1 to complete a suture, in the process of pulling out the piston 1, the inclined pin 11 also moves outward synchronously, at this time, the blade 20 abutted with the inclined pin 11 gradually moves downward along the inclined surface 110 under the action of the elastic element 21, when the blade 20 is separated from the abutment with the inclined pin 11, that is, after the piston 1 and the hard needle 10 are pulled out, the blade 20 is abutted with the cutting platform 31 under the action of the elastic element 21 and cuts the suture 12, to complete the automatic cutting action, so that the medical staff can complete the cutting of the suture 12 at the same time when the piston 1 is pulled out, without the need of winding the suture 12 to an external cutting component to complete the cutting, which greatly facilitates the operation of the medical staff.

[0037] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A blood vessel suturing device capable of automatically cutting sutures, comprising a housing (3) and a suturing mechanism (4) disposed at least partially within the housing (3), characterized in that, The blood vessel suturing device further comprises a cutting mechanism (2) arranged in the shell (3); The cutting mechanism (2) comprises a blade (20) and an elastic element (21), and the shell (3) is provided with a receiving portion (30), the elastic element (21) is arranged in the receiving portion (30), and one end of the elastic element (21) abuts against a bottom wall (301) forming the receiving portion (30), and the other end abuts against the blade (20); The suturing mechanism (4) comprises a piston (1) and a hard needle (10), the hard needle (10) is fixedly connected with the piston (1), the hard needle (10) is further connected with a suture (12), and the hard needle (10) is driven to advance or retract towards the host to complete the blood vessel suturing work, and the piston (1) is provided with an inclined pin (11) which slidably abuts against the blade (20). When the user pulls out the piston (1), the blade (20) moves towards the suture (12) under the elastic force of the elastic element (21) to complete the cutting of the suture (12).

2. The blood vessel suturing device capable of automatically cutting sutures according to claim 1, wherein, A first sliding groove (302) is formed in the receiving portion (30), and the blade (20) is at least partially arranged in the first sliding groove (302) and can slide along the first sliding groove (302).

3. The blood vessel suturing device capable of automatically cutting sutures according to claim 2, wherein, A cutting platform (31) which can abut against the blade (20) is arranged on the shell (3), and the blade (20) can abut against the cutting platform (31) to complete the cutting action when the piston (1) is retracted.

4. The blood vessel suturing device capable of automatically cutting sutures according to claim 1, wherein, An inclined surface (110) is formed on the inclined pin (11), and the blade (20) slidably abuts against the inclined surface (110).

5. The blood vessel suturing device capable of automatically cutting sutures according to claim 4, wherein An opening (201) is formed on the blade (20), the inclined pin (11) slidably passes through the opening (201), and a first plane (202) of the opening (201) abuts against the inclined surface (110).

6. The blood vessel suturing device capable of automatically cutting sutures according to claim 1, wherein, An abutting portion (203) is further formed on the blade (20), the abutting portion (203) is arranged in the receiving portion (30), and the other end of the elastic element (21) abuts against the abutting portion (203).

7. The blood vessel suturing device capable of automatically cutting sutures according to claim 3, wherein A second sliding groove (32) is formed in the shell (3), and the inclined pin (11) is at least partially arranged in the second sliding groove (32) and can slide along the second sliding groove (32).

8. The blood vessel suturing device capable of automatically cutting sutures according to claim 3, wherein A cutting groove is formed on the cutting platform (31), and a cutting edge of the blade (20) can be at least partially accommodated in the cutting groove.

9. The blood vessel suturing device capable of automatically cutting sutures according to claim 7, wherein The shell (3) comprises a first shell (33), and the receiving portion (30) and the second sliding groove (32) are arranged on the first shell (33).

10. The blood vessel suturing device capable of automatically cutting sutures according to claim 9, wherein, The shell (3) further comprises a second shell (34) which is clamped with the first shell (33), and the cutting platform (31) is arranged on the second shell (34).

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