Cutter head structure of ultrasonic cutting hemostasis knife and ultrasonic cutting hemostasis knife

Abstract

The utility model discloses a knife head structure of an ultrasonic cutting hemostasis knife and the ultrasonic cutting hemostasis knife, and relates to the technical field of medical instruments, and the knife head structure of the ultrasonic cutting hemostasis knife comprises a knife rod and a chuck; wherein the cutter bar is provided with a cutter bar head, the chuck is provided with a rotating center, and the chuck can rotate around the rotating center relative to the cutter bar; a clamping part is arranged on the face, facing the head of the cutter bar, of the chuck. The chuck rotates around the rotating center so that the clamping part can be close to the head of the cutter bar to clamp tissue or away from the head of the cutter bar to release tissue. Anti-skid structures are arranged on the two opposite side edges, facing the head of the cutter bar, of the chuck in the width direction of the chuck, and the anti-skid structures are used for preventing the tissue from slipping between the clamping part and the head of the cutter bar when the tissue is clamped. According to the technical scheme provided by the utility model, the possibility of tissue slippage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a blade head structure of an ultrasonic cutting hemostat and an ultrasonic cutting hemostat. Background Art

[0002] Ultrasonic cutting hemostat is a common surgical instrument used in surgical operations to cut and coagulate tissues or blood vessels.

[0003] The blade head of this type of ultrasonic cutting hemostatic knife generally includes a chuck, a shank and a gasket. The chuck can rotate around its own axis to move closer to or away from the shank. The gasket is arranged on the side of the chuck facing the shank. When the chuck approaches the shank, the tissue is clamped by the gasket and the shank.

[0004] However, this type of ultrasonic cutting hemostatic knife is prone to slipping when clamping tissue. Utility Model Content

[0005] The main purpose of the utility model is to provide a blade head structure of an ultrasonic cutting hemostat and an ultrasonic cutting hemostat, aiming to reduce the possibility of tissue slippage.

[0006] To achieve the above-mentioned purpose, the ultrasonic cutting hemostatic knife head structure proposed in the present invention includes:

[0007] Tool holder and chuck; wherein,

[0008] The knife bar includes a knife bar head fixedly arranged at the distal end of the knife bar;

[0009] The proximal end of the chuck has a rotation center, and the chuck can rotate relative to the tool rod around the rotation center so that the chuck opens and closes relative to the head of the tool rod;

[0010] A clamping portion is provided on a side of the chuck facing the shank head, and the rotation of the chuck around the rotation center causes the clamping portion to approach the shank head to clamp the tissue or to move away from the shank head to release the tissue;

[0011] Along the width direction of the chuck, two opposite sides of the chuck facing the knife rod head are provided with anti-slip structures, and the anti-slip structures are used to prevent tissue from slipping between the clamping portion and the knife rod head when clamping tissue.

[0012] In one embodiment, the chuck includes a chuck body and a gasket, the clamping portion is a gasket connected to the chuck body, and the chuck body or the gasket has two opposite sides in the width direction provided with a rib portion, the rib portion extends toward the direction of the tool rod head, and the anti-slip structure is provided at the end of the rib portion close to the tool rod head.

[0013] In one embodiment, the anti-slip structure includes a plurality of first serrations distributed along the axial direction of the chuck.

[0014] In one embodiment, the first saw teeth are inclined toward the rotation center.

[0015] In one embodiment, a plurality of second serrations are axially provided on a surface of the gasket facing the shank head, and each of the second serrations extends from one end to the other end along the width direction of the gasket.

[0016] In one embodiment, the second saw teeth are inclined toward the rotation center.

[0017] In one embodiment, the tooth depth of the first sawtooth is greater than the tooth depth of the second sawtooth; and / or,

[0018] The tooth spacing between two adjacent first saw teeth is greater than the tooth spacing between two adjacent second saw teeth.

[0019] In one embodiment, the height of the rib portion is greater than the height of the gasket, and the gasket is embedded in the chuck body and is detachably connected to the chuck body.

[0020] In one embodiment, a groove or a protrusion is axially provided on a side of the chuck body facing the tool rod head, and a protrusion or a groove that cooperates with the groove or the protrusion is provided on a side of the gasket away from the tool rod head, and the gasket and the chuck body are detachably connected through the cooperation of the groove and the protrusion.

[0021] The utility model also provides an ultrasonic cutting hemostatic knife, comprising an outer tube, an inner tube, and the above-mentioned blade structure of the ultrasonic cutting hemostatic knife; wherein,

[0022] The tool rod is sleeved inside the inner tube and the tool rod head extends from the distal end of the inner tube, the outer tube is sleeved outside the inner tube and the inner tube can move axially relative to the outer tube, the chuck is rotatably connected to the outer tube to form the rotation center, and the chuck is connected to the inner tube and rotates around the rotation center with the axial movement of the inner tube.

[0023] The blade structure of the ultrasonic hemostatic knife in the technical solution of the present invention includes a blade rod and a chuck. The blade rod has a blade rod head, and the chuck has a rotation center. The chuck can rotate relative to the blade rod around its own rotation center. The clamping portion is provided on the side of the chuck facing the blade rod head. Through the rotation of the chuck, the clamping portion is moved closer to the blade rod head to clamp tissue, or moved away from the blade rod head to release tissue. Anti-slip structures are also provided on both sides of the chuck. When the clamping portion and the blade rod head clamp tissue, the anti-slip structure contacts the tissue, increasing the friction between the tissue and the blade structure, reducing the possibility of tissue slippage, and thus reducing the possibility of tissue slipping between the chuck and the blade rod head. This reduces the difficulty of the user's operation during surgery, thereby improving the safety of the surgery and improving the position accuracy of the surgical operation on the tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the ultrasonic cutting hemostatic knife provided by the present invention Figure 1 ;

[0026] Figure 2 A schematic diagram of the structure of an embodiment of the ultrasonic cutting hemostatic knife provided by the present invention Figure 2 ;

[0027] Figure 3 A schematic diagram of the partial structure of an embodiment of the ultrasonic cutting hemostatic knife provided by the present invention Figure 1 ;

[0028] Figure 4 A schematic diagram of the partial structure of an embodiment of the ultrasonic cutting hemostatic knife provided by the present invention Figure 2 ;

[0029] Figure 5 This is a partial structural schematic diagram of another embodiment of the blade structure of the ultrasonic cutting hemostatic knife provided by the present invention.

[0030] Description of Figure Numbers:

[0031] 100, shank head;

[0032] 200, chuck; 210, chuck body; 211, rotation center; 220, gasket; 221, second serration;

[0033] 300, rib portion; 310, anti-slip structure; 311, first serration;

[0034] 400, external control;

[0035] 500, inner tube.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In this utility model, unless otherwise specified or limited, the terms "connect" and "fix" should be understood in a broad sense. For example, "fix" can refer to a fixed connection, a detachable connection, or an integral connection; "connect" can refer to a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, and can refer to internal communication between two components or an interaction between two components. Unless otherwise specified, those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0040] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The utility model provides a knife head structure of an ultrasonic cutting hemostatic knife.

[0042] See also Figures 1 to 2 , Figure 1 A schematic diagram of the structure of an embodiment of the ultrasonic cutting hemostatic knife provided by the present invention Figure 1 , Figure 2 A schematic diagram of the structure of an embodiment of the ultrasonic cutting hemostatic knife provided by the present invention Figure 2 .

[0043] In one embodiment of the present invention, the blade structure of the ultrasonic hemostatic knife includes:

[0044] Tool bar and chuck 200; wherein,

[0045] The shank includes a shank head 100 fixedly disposed at the distal end of the shank;

[0046] The proximal end of the chuck 200 has a rotation center 211, and the chuck 200 can rotate relative to the tool rod around the rotation center 211, so that the chuck 200 opens and closes relative to the tool rod head 100;

[0047] A clamping portion is provided on one side of the chuck 200 facing the shank head 100. The rotation of the chuck 200 around the rotation center 211 causes the clamping portion to move closer to the shank head 100 to clamp tissue or move away from the shank head 100 to release tissue.

[0048] Along the width direction of the chuck 200 , anti-slip structures 310 are provided on two opposite sides of the chuck 200 facing the shank head 100 . The anti-slip structures 310 are used to prevent tissue from slipping between the clamping portion and the shank head 100 when clamping tissue.

[0049] The ultrasonic hemostatic scalpel blade structure of the present invention includes a shank and a collet 200. The shank has a shank head 100. The collet 200 has a rotation center 211. The collet 200 can rotate relative to the shank about its own rotation center 211, thereby opening and closing the collet relative to the shank head 100. A clamping portion is provided on the side of the collet 200 facing the shank head 100. The rotation of the collet 200 allows the clamping portion to move closer to the shank head 100 to clamp tissue, or move away from the shank head 100 to release tissue. Anti-slip structures 310 are also provided on both sides of the collet 200. When the clamping portion and the shank head 100 clamp tissue, the anti-slip structures 310 contact the tissue, increasing the friction between the tissue and the shank structure, reducing the possibility of tissue slipping, and thus reducing the possibility of tissue slipping between the collet 200 and the shank head 100. This reduces the difficulty of the user's operation during surgery, thereby improving surgical safety and increasing the positioning accuracy of the tissue during surgical manipulation.

[0050] The clamping portion can be integrally formed with the chuck body 210, that is, a part of the chuck body 210 serves as the clamping portion; or a gasket 220 can be provided separately, and the gasket 220 is fixedly connected or detachably connected to the chuck body 210 to form the clamping portion.

[0051] In one embodiment, the chuck 200 includes a chuck body 210 and a gasket 220, the clamping portion is the gasket 220 connected to the chuck body 210, and the chuck body 210 or the gasket 220 is provided with a rib portion 300 on the opposite sides in the width direction, and the rib portion 300 extends toward the tool rod head 100, and the anti-slip structure 310 is provided at the end of the rib portion 300 close to the tool rod head 100.

[0052] In the embodiment of the present invention, the chuck 200 includes a chuck body 210 and a gasket 220. When the chuck body 210 is close to the shank head 100, the gasket 220 and the shank head 100 clamp the tissue. Figure 2 As shown, the anti-slip structure 310 is provided on the end of the rib portion 300 on the chuck body 210 toward the shank head 100. The rib portion 300 and the anti-slip structure 310 are integrally formed with the chuck body 210, and have high strength, are not easy to wear, and have a long service life. The rib portion 300 can also be provided on both sides of the gasket 220 in the width direction, such as Figure 5 As shown, the anti-slip structure 310 is arranged on the end of the rib portion 300 on the gasket 220 facing the shank head 100. The rib portion 300 and the anti-slip structure 310 are integrally formed with the gasket 220, which is easy to process and reduces manufacturing costs.

[0053] The anti-slip structure 310 may be implemented by providing protrusions or grooves, or by performing processes such as acid etching or sandblasting on the surface of the rib portion 300 to increase the surface roughness.

[0054] In one embodiment, the anti-slip structure 310 includes a plurality of first serrations 311 distributed along the axial direction of the chuck 200 .

[0055] Reference Figure 4 In an embodiment of the present invention, the anti-slip structure 310 includes a plurality of first serrations 311, which are in the form of serrations to achieve the anti-slip function. On the one hand, the serrations have a good anti-slip effect and can further reduce the possibility of tissue slippage; on the other hand, the serration structure is simple, easy to process, and has a low manufacturing cost.

[0056] In one embodiment, the first saw teeth 311 are inclined toward the direction approaching the rotation center 211 .

[0057] Reference Figure 1 and Figure 3 In an embodiment of the present invention, the first serration 311 is inclined toward the direction close to the rotation center 211, that is, the first serration 311 is inclined toward the rear end of the cutter head structure. When the tissue is clamped between the gasket 220 and the knife rod 100, the first serration 311 inclined toward the rear end of the cutter head structure can better resist the tissue from sliding toward the front end of the cutter head structure, thereby further reducing the possibility of the tissue slipping from the front end of the cutter head structure, further reducing the difficulty of the surgical operation, and improving the safety of the operation.

[0058] In one embodiment, a plurality of second serrations 221 are axially provided on a surface of the gasket 220 facing the shank head 100 , and each second serration 221 extends from one end to the other end along the width direction of the gasket 220 .

[0059] Reference Figure 1 In an embodiment of the present invention, a plurality of second serrations 221 are provided on the side of the gasket 220 facing the knife rod head 100. When the gasket 220 and the knife rod head 100 clamp the tissue, the second serrations 221 increase the friction between the gasket 220 and the tissue. Through the joint action of the first serrations 311 and the second serrations 221, the possibility of tissue sliding is further reduced, thereby further reducing the possibility of tissue slippage.

[0060] In one embodiment, the second saw teeth 221 are inclined toward the direction approaching the rotation center 211 .

[0061] Reference Figure 1In an embodiment of the present invention, the second serrations 221 are inclined toward the direction close to the rotation center 211, that is, the second serrations 221 are inclined toward the rear end of the blade structure. When tissue is clamped between the gasket 220 and the shank head 100, the second serrations 221 inclined toward the rear end of the blade structure can better resist tissue sliding toward the front end of the blade structure, thereby further reducing the possibility of tissue slipping from the front end of the blade structure, further reducing the difficulty of surgical operation, and improving surgical safety. Specifically in this embodiment, the first serrations 311 and the second serrations 221 are both inclined toward the rear end of the blade structure, greatly reducing the possibility of tissue sliding toward the front end of the blade structure, thereby greatly reducing the possibility of tissue slipping.

[0062] In one embodiment, the tooth depth of the first sawtooth 311 is greater than the tooth depth of the second sawtooth 221; and / or,

[0063] The tooth spacing between two adjacent first saw teeth 311 is greater than the tooth spacing between two adjacent second saw teeth 221 .

[0064] In an embodiment of the present invention, the tooth depth of the first serration 311 is deeper than the tooth depth of the second serration 221. When in contact with tissue, the deeper tooth depth is beneficial to improving the effect of resisting tissue sliding, thereby improving the anti-slip effect of the anti-slip structure 310; and, since the retaining edge 300 and the chuck 200 are both made of metal material and the gasket 220 is made of elastic material, the first serration 311 has better strength and rigidity than the second serration 221, and a serration with a deeper tooth depth can be set.

[0065] In the embodiment of the present invention, the tooth spacing between adjacent first serrations 311 is large, which reduces the difficulty of processing the first serrations 311. The tooth spacing between adjacent second serrations 221 is small, which helps to improve the strength and rigidity of the second serrations 221, thereby improving the effect of the second serrations 221 in resisting tissue sliding, thereby improving the anti-slip effect of the second serrations 221.

[0066] In one embodiment, the height of the rib portion 300 is greater than the height of the gasket 220 . The gasket 220 is embedded in the chuck body 210 and is detachably connected to the chuck body 210 .

[0067] Reference Figure 1 and Figure 2In an embodiment of the present invention, the height of the rib portion 300 is greater than that of the gasket 220, so that the anti-slip structure 310 is closer to the shank head 100 than the gasket 220. When the gasket 220 and the shank head 100 clamp tissue, the rib portion 300 presses the tissue downward and bends it, increasing the contact area between the tissue and the shank head 100, thereby improving the efficiency and effectiveness of the cutting and hemostasis operation. Furthermore, the anti-slip structure 310, being closer to the shank head 100, can ensure contact with the tissue, thereby ensuring the anti-slip function of the anti-slip structure 310 and reducing the possibility of tissue slippage. The gasket 220 can be detachably connected to the chuck body 210 using various methods, such as snap-fitting or screw-fitting.

[0068] In one embodiment, a groove or protrusion is axially provided on the side of the chuck body 210 facing the shank head 100, and a protrusion or groove that matches the groove or protrusion is provided on the side of the gasket 220 facing away from the shank head 100. The gasket 220 and the chuck body 210 are detachably connected through the cooperation of the groove and the protrusion.

[0069] In an embodiment of the present utility model, the gasket 220 and the chuck body 210 are detachably connected by the combination of grooves and protrusions. A groove can be set on the chuck body 210 and a corresponding protrusion can be set on the gasket 220, or a groove can be set on the gasket 220 and a corresponding protrusion can be set on the chuck body 210. The structural form of the detachable connection is simple, easy to process and manufacture, and reduces the manufacturing cost of the tool head structure.

[0070] In one embodiment, the anti-slip structure 310 includes a plurality of linear protrusions extending along the width direction of the gasket 220 , or a plurality of wavy protrusions extending along the width direction of the gasket 220 , or a plurality of protrusions.

[0071] In an embodiment of the present invention, the anti-slip structure 310 can be formed by providing a plurality of linear protrusions, a plurality of wavy protrusions, or a plurality of protrusions on the sidewall portion 300 . The structure is relatively simple and the processing difficulty is relatively low.

[0072] The present invention also provides an ultrasonic cutting hemostatic knife, comprising an outer tube 400, an inner tube 500, and the above-mentioned blade structure of the ultrasonic cutting hemostatic knife; wherein,

[0073] The tool rod is sleeved inside the inner tube 500 and the tool rod head 100 extends from the distal end of the inner tube 500. The outer tube 400 is sleeved outside the inner tube 500 and the inner tube 500 can move axially relative to the outer tube 400. The chuck 200 is rotatably connected to the outer tube 400 to form a rotation center 211. The chuck 200 is connected to the inner tube 500 and rotates around the rotation center 211 with the axial movement of the inner tube 500.

[0074] The specific structure of the blade structure of the ultrasonic cutting hemostatic knife is referred to the above embodiment. Since the ultrasonic cutting hemostatic knife adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Figure 1 The shank is sheathed within the inner tube 500, and the chuck 200 and outer tube 400 are rotatably connected to form a rotation center 211. The chuck 200 and inner tube 500 are also rotatably connected. When the inner tube 500 moves axially within the outer tube 400, the inner tube 500 drives the chuck 200 to move, causing the chuck 200 to rotate around the rotation center 211, thereby moving the gasket 220 closer to or further away from the shank head 100. The structure is simple and the manufacturing process is mature. By adopting the above-mentioned shank structure, the possibility of tissue slippage is reduced, the clamping function of the shank structure is enhanced, and the cutting and hemostasis efficiency during surgery is improved.

[0075] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A blade structure of an ultrasonic hemostatic knife, characterized in that: include: Tool holder and chuck; wherein, The knife bar includes a knife bar head fixedly arranged at the distal end of the knife bar; The proximal end of the chuck has a rotation center, and the chuck can rotate relative to the tool rod around the rotation center so that the chuck opens and closes relative to the head of the tool rod; A clamping portion is provided on a side of the chuck facing the shank head, and the rotation of the chuck around the rotation center causes the clamping portion to approach the shank head to clamp the tissue or to move away from the shank head to release the tissue; Along the width direction of the chuck, two opposite sides of the chuck facing the knife rod head are provided with anti-slip structures, and the anti-slip structures are used to prevent tissue from slipping between the clamping portion and the knife rod head when clamping tissue.

2. The blade structure of the ultrasonic hemostatic knife according to claim 1, characterized in that: The chuck includes a chuck body and a gasket, the clamping portion is a gasket connected to the chuck body, and the chuck body or the gasket has two opposite sides in the width direction provided with rib portions, the rib portions extending toward the direction of the tool rod head, and the anti-slip structure is provided at the end of the rib portion close to the tool rod head.

3. The blade structure of the ultrasonic hemostatic knife according to claim 2, characterized in that: The anti-slip structure includes a plurality of first serrations distributed along the axial direction of the chuck.

4. The blade structure of the ultrasonic hemostatic knife according to claim 3, characterized in that: The first saw teeth are inclined toward the direction approaching the rotation center.

5. The blade structure of the ultrasonic hemostatic knife according to claim 3, characterized in that: A plurality of second serrations are axially provided on a surface of the gasket facing the shank head, and each of the second serrations extends from one end to the other end along the width direction of the gasket.

6. The blade structure of the ultrasonic hemostatic knife according to claim 5, characterized in that: The second saw teeth are inclined toward the direction approaching the rotation center.

7. The blade structure of the ultrasonic hemostatic knife according to claim 5, characterized in that: The tooth depth of the first sawtooth is greater than the tooth depth of the second sawtooth; and / or, The tooth spacing between two adjacent first saw teeth is greater than the tooth spacing between two adjacent second saw teeth.

8. The blade structure of the ultrasonic hemostatic knife according to claim 2, characterized in that: The height of the rib portion is greater than the height of the gasket, and the gasket is embedded in the chuck body and is detachably connected to the chuck body.

9. The blade structure of the ultrasonic hemostatic knife according to claim 2, characterized in that: The chuck body has a groove or protrusion axially provided on one side facing the tool rod head, and the gasket has a protrusion or groove matching the groove or protrusion on one side facing away from the tool rod head. The gasket and the chuck body are detachably connected through the matching of the groove and the protrusion.

10. An ultrasonic cutting hemostatic knife, characterized in that: The invention comprises an outer tube, an inner tube, and a blade structure of an ultrasonic hemostatic cutting knife according to any one of claims 1 to 9; wherein, The tool rod is sleeved inside the inner tube and the tool rod head extends from the distal end of the inner tube, the outer tube is sleeved outside the inner tube and the inner tube can move axially relative to the outer tube, the chuck is rotatably connected to the outer tube to form the rotation center, and the chuck is connected to the inner tube and rotates around the rotation center with the axial movement of the inner tube.

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