Needle knife capable of fixing knife insertion depth

Abstract

The utility model relates to the technical field of needle knives, in particular to a needle knife capable of fixing knife insertion depth, which comprises a needle knife handle and a needle knife body fixed at the bottom of the needle knife handle, sliding rods are connected to two sides of the needle knife handle in a penetrating and sliding manner, a positioning plate is fixed between the bottoms of the two sliding rods, and a round hole is formed in the surface of the positioning plate. A positioning mechanism used for adjusting the knife entering depth is arranged between the needle knife handle and the sliding rod; the positioning plate can be adjusted by moving the sliding rod up and down, then the position of the positioning plate is fixed through the inserting rod and the positioning hole, the positioning plate can abut against the cutting position when the needle knife is used, the knife entering depth can be guaranteed at the moment, and too deep cutting is avoided; the knife entering depth can be adjusted only by extruding the sliding block inwards to enable the inserting rod to be separated from the positioning hole, the connecting plate can be taken down by pressing the elastic shifting piece, then the positioning plate and the sliding rod can be rapidly disassembled for disinfection, repeated use is convenient, and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to needle knife technical field especially relates to a kind of needle knife with fixed depth of entry. BACKGROUND

[0002] ‌Needle knife is a kind of special treatment appliance‌, combined acupuncture needle and surgical knife function, is between surgical method and non-surgical therapy between closed release, needle knife can directly aim at the key position causing pain and dysfunction, such as adhesion, scar pathological tissue structure, accurate treatment‌.

[0003] The current needle knife is composed of a needle body with a diameter of about 1mm and a blade at the tip, which is slender like a needle, such as a needle knife and a needle knife packaging piece disclosed in Chinese patent publication No. "CN221578882U", wherein the needle knife includes a handle and a needle knife body fixedly connected to the bottom of the handle, the handle is flat; the needle knife body is cylindrical, and the end of the needle knife body away from the handle is sharpened as a needle knife tip; one side of the needle knife tip is rounded to form a round blade section, and the side of the needle knife tip away from the round blade section is a sharp blade section without further processing, and a flat blade section is connected between the sharp blade section and the round blade section.

[0004] The existing needle knife mainly relies on the operation experience of medical personnel to control the depth and position of penetration during use, so the advancing direction and scale of the blade are not easy to grasp, and multi-directional deviation is likely to occur during the operation process, resulting in increased blade opening and increased soft tissue trauma. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the prior art, such as the difficulty in grasping the advancing direction and scale of the needle knife, the easy occurrence of multi-directional deviation during the operation process, the increased blade opening, and the increased soft tissue trauma, and proposes a needle knife with fixed depth of entry.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A needle knife with fixed depth of entry is designed, which includes a needle knife handle and a needle knife body fixed to the bottom of the needle knife handle, two sliding rods are slidingly connected through the two sides of the needle knife handle, a positioning plate is fixed between the bottoms of the two sliding rods, a circular hole is formed in the surface of the positioning plate, a positioning mechanism for adjusting the depth of entry is arranged between the needle knife handle and the sliding rod, and a connecting mechanism is arranged between the two sliding rods.

[0008] Further, the positioning mechanism includes a plurality of positioning holes formed in the surfaces of the two sliding rods and a boss fixed to the top of the needle knife handle, a sliding groove is formed through the two sides of the surface of the boss, and an elastic clamping assembly is arranged between the boss and the positioning hole and the boss.

[0009] Further, the elastic clamping assembly comprises a sliding block slidingly connected to the inner side of the sliding groove, an insertion rod is fixed to the outer end of the sliding block, the insertion rod passes through the sliding groove and is movably inserted into the positioning hole, and a spring is arranged between the sliding block and the sliding groove.

[0010] Further, a guide strip is fixed to the upper and lower ends of the inner wall of the sliding groove, and a guide groove is formed in the upper and lower sides of the sliding block and is slidingly connected to the guide strip.

[0011] Further, a fixed push block is fixed to the front of the sliding block, the fixed push block is fixed to the side away from the insertion rod, and a chamfer structure is arranged on the outer side of the two fixed push blocks.

[0012] Further, the connecting mechanism comprises a connecting plate movably connected between the two sliding rods, an insertion block is fixed to the top of each of the two sliding rods, a square groove is formed in the surface of the insertion block, and a flexible push piece is defined on the surface of the insertion block through the square groove.

[0013] The needle knife with a fixed cutting depth has the beneficial effects that the positioning plate can be adjusted by moving the sliding rod up and down, the position of the positioning plate is then fixed by the insertion rod and the positioning hole, the positioning plate can abut against the cutting position when the needle knife is used, the cutting depth can be ensured at this time, the cutting depth is prevented from being too deep, the cutting depth can be adjusted only by inwardly extruding the sliding block to make the insertion rod disengage from the positioning hole, the connecting plate can be removed by pressing the flexible push piece, the positioning plate and the sliding rod can be quickly disassembled for disinfection, repeated use is facilitated, and the use cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a three-dimensional structure schematic view of the utility model Figure 1 ;

[0016] Figure 3 It is a three-dimensional structure schematic view of the utility model Figure 2 ;

[0017] Figure 4 It is a three-dimensional structure schematic view of the utility model Figure 2 ;

[0018] Figure 5 It is a three-dimensional structure schematic view of the utility model Figure 3 ;

[0019] In the figure: 1, needle knife handle; 2, needle knife body; 3, sliding rod; 4, positioning plate; 5, round hole; 6, positioning mechanism; 61, positioning hole; 62, boss; 63, sliding groove; 7, connecting mechanism; 71, connecting plate; 72, plug; 73, square groove; 74, elastic push piece; 8, elastic clamping assembly; 81, sliding block; 82, plug rod; 83, spring; 9, guide bar; 10, guide groove; 11, fixed push block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] Reference Figures 1-5 A needle knife with fixed depth of cutting, comprising a needle knife handle 1 and a needle knife body 2 fixed to the bottom of the needle knife handle 1, sliding rods 3 are connected to the both sides of the needle knife handle 1, a positioning plate 4 is fixed between the bottoms of the two sliding rods 3, a round hole 5 is formed on the surface of the positioning plate 4, the round hole 5 is sleeved on the outside of the needle knife body 2, a positioning mechanism 6 for adjusting the depth of cutting is arranged between the needle knife handle 1 and the sliding rods 3, and a connecting mechanism 7 is arranged between the two sliding rods 3; the needle knife can adjust the positioning plate 4 by moving the sliding rods 3 up and down, then the position of the positioning plate 4 is fixed by the plug rod 82 and the positioning hole 61, and the positioning plate 4 can abut against the cutting position when the needle knife is used, so that the depth of cutting can be ensured and the cutting depth is prevented from being too deep, the sliding block 81 is only pressed inward to make the plug rod 82 disengage from the positioning hole 61, so that the depth of cutting can be adjusted, the connecting plate 71 can be removed by pressing the elastic push piece 74, then the positioning plate 4 and the sliding rods 3 can be quickly disassembled for disinfection, repeated use is facilitated, and the use cost is reduced.

[0022] In the embodiment, the positioning mechanism 6 comprises a plurality of positioning holes 61 formed on the surfaces of the two sliding rods 3 and a boss 62 fixed to the top of the needle knife handle 1, sliding grooves 63 are formed on the both sides of the surface of the boss 62, an elastic clamping assembly 8 is arranged between the boss 62 and the positioning hole 61 and the boss 62, the sliding grooves 63 are symmetrically distributed, the spacing between the plurality of positioning holes 61 is the same, and the distance of the positioning plate 4 can be uniformly adjusted.

[0023] Further, the elastic clamping assembly 8 comprises a sliding block 81 slidably connected to the inner side of the sliding groove 63, the outer end of the sliding block 81 is fixed with a plug rod 82, the plug rod 82 is movably inserted into the sliding groove 63 and the positioning hole 61, a spring 83 is arranged between the sliding block 81 and the sliding groove 63, and the plug rod 82 can be inserted into the positioning hole 61, so that the positioning plate 4 is conveniently fixed.

[0024] Further, the upper and lower ends of the inner wall of the chute 63 are fixed with guide strips 9, the upper and lower sides of the sliding block 81 are provided with guide grooves 10, the guide grooves 10 are in sliding connection with the guide strips 9, the guide strips 9 and the guide grooves 10 can guide the sliding block 81, and sliding is more stable.

[0025] In addition, the front of the sliding block 81 is fixed with fixed knobs 11, the fixed knobs 11 are fixed on the side away from the insertion rod 82, and the outer sides of the two fixed knobs 11 are provided with chamfered structures, and the fixed knobs 11 can conveniently extrude the two sliding blocks 81 inward.

[0026] It should be noted that the connecting mechanism 7 comprises a connecting plate 71 movably connected between the two sliding rods 3, the top of each of the two sliding rods 3 is fixed with an insertion block 72, the surface of the insertion block 72 is provided with a square groove 73, and the surface of the insertion block 72 is limited by the square groove 73 to define a flexible elastic knob 74, the elastic knob 74 can be pressed to remove the connecting plate 71, and then the positioning plate 4 and the sliding rod 3 can be quickly disassembled for disinfection.

[0027] Working mode: when the needle knife is used, the staff can press the fixed knobs 11 with hands to extrude the sliding blocks 81 inward, the sliding blocks 81 extrude the springs 83 and drive the insertion rods 82 to be separated from the positioning holes 61, then the sliding rods 3 are pulled up and down to adjust the position of the positioning plate 4, then the insertion rods 82 are clamped again, the positioning plate 4 can abut against the human body and limit the depth of the needle knife inserted into the human body when the needle knife is used, the elastic knob 74 is pressed and the connecting plate 71 is removed after use, then the sliding blocks 81 are extruded inward, and the sliding rod 3 together with the positioning plate 4 can be pulled out downward for cleaning.

[0028] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A depth fixable needle knife, comprising a needle knife handle (1) and a needle knife body (2) fixed to the bottom of the needle knife handle (1), characterized in that: Two sliding rods (3) are slidably connected through the both sides of the needle knife handle (1), the bottom of the two sliding rods (3) is fixed with a positioning plate (4), a round hole (5) is formed in the surface of the positioning plate (4), the positioning mechanism (6) for adjusting the depth of the knife is arranged between the needle knife handle (1) and the sliding rod (3), and the connecting mechanism (7) is arranged between the two sliding rods (3).

2. The fixed depth needle knife according to claim 1, wherein: The positioning mechanism (6) comprises a plurality of positioning holes (61) formed in the surface of the two sliding rods (3) and a boss (62) fixed to the top of the needle knife handle (1), a sliding groove (63) is formed through the both sides of the surface of the boss (62), and the elastic clamping assembly (8) is arranged between the boss (62), the positioning hole (61) and the boss (62).

3. The fixed depth needle knife according to claim 2, wherein: The elastic clamping assembly (8) comprises a sliding block (81) slidably connected to the inner side of the sliding groove (63), an insertion rod (82) is fixed to the outer end of the sliding block (81), the insertion rod (82) is movably inserted into the sliding groove (63) and the positioning hole (61), and a spring (83) is arranged between the sliding block (81) and the sliding groove (63).

4. The fixed depth needle knife according to claim 3, wherein: The upper and lower ends of the inner wall of the sliding groove (63) are fixed with guide strips (9), the upper and lower sides of the sliding block (81) are formed with guide grooves (10), and the guide grooves (10) are slidably connected with the guide strips (9).

5. The fixed depth needle knife according to claim 3, wherein: The front surface of the sliding block (81) is fixed with a fixed knob (11), the fixed knob (11) is fixed to the side away from the insertion rod (82), and the outer sides of the two fixed knobs (11) are provided with chamfered structures.

6. The fixed depth blade of claim 1, wherein: The connecting mechanism (7) comprises a connecting plate (71) movably connected between the two sliding rods (3), the top of the two sliding rods (3) is fixed with an insertion block (72), a square groove (73) is formed in the surface of the insertion block (72), and a flexible elastic knob (74) is defined on the surface of the insertion block (72) through the square groove (73).

Images