Breast positioning needle with roller guide wire moving structure

Abstract

The present application relates to a breast positioning needle with a roller type guide wire moving structure, comprising: a handle assembly; a guide wire locking structure for locking or unlocking between the guide wire and the slider; a guide wire moving structure, which pushes the slider in the locked state by using the roller type guide wire moving structure, so as to drive the guide wire to advance or retreat; the guide wire locking structure and the guide wire moving structure are arranged in the handle assembly. The guide wire is pushed by the roller, and the guide wire is sent out or retracted more labor-saving due to the power saving effect of the gear; the handle is not easy to shake during operation, and the positioning accuracy of the guide wire is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a breast positioning needle with a roller type guide wire moving structure. BACKGROUND

[0002] The information disclosed in this Background section is only for the purpose of increasing an understanding of the general context of the present application and does not necessarily constitute an acknowledgement or a warranty as to any prior art, either expressly or impliedly, that is already ascertained to be known in the art.

[0003] Breast lumps are one of the common diseases of women, and breast lumps with a diameter of less than 1 cm, especially less than 0.5 cm, often cannot be accurately operated due to the surgeon's inability to touch or palpate, and need to be operated after positioning with a breast positioning needle.

[0004] The breast positioning needle is usually guided by ultrasound to stab the outer needle into the lump area, and release the guide wire in the operation handle to fix the tip of the guide wire in the lump area. In the prior art, the locking and unlocking relationship between the guide wire and the handle is determined by the pressing force, and a large force needs to be pressed to lock the guide wire and the handle during operation, and a large force also needs to be applied to push the guide wire, and too large force during operation can easily cause hand shaking, thereby affecting the positioning position of the guide wire. SUMMARY

[0005] Therefore, the present application provides a breast positioning needle with a roller type guide wire moving structure, which pushes the guide wire through the roller, and due to the power saving effect of the gear, it is more labor-saving to send or retract the guide wire.

[0006] Specifically, the present application adopts the following technical solutions:

[0007] A breast positioning needle with a roller type guide wire moving structure comprises: a handle assembly; a guide wire locking structure for locking or unlocking between the guide wire and the sliding block; a guide wire moving structure for pushing the sliding block in the locked state through the roller type guide wire moving structure, thereby driving the guide wire to move forward or backward; and the guide wire locking structure and the guide wire moving structure are arranged in the handle assembly.

[0008] Optionally, the guide wire locking structure is located at one end of the handle assembly, and the guide wire moving structure is located at the other end of the handle assembly.

[0009] Optionally, the guide wire locking structure is located at the front end of the handle assembly, and the guide wire moving structure is located at the rear end of the handle assembly.

[0010] Optionally, the guide wire locking structure comprises a sliding mechanism, an upper sliding block for the sliding mechanism to slide, a lower sliding block matched with the upper sliding block, and a guide wire between the upper sliding block and the lower sliding block; the locking or unlocking between the guide wire and the sliding block is realized by the sliding of the sliding mechanism.

[0011] Optionally, in the guide wire locking structure, when the sliding mechanism is located at one side of the upper sliding block, the sliding mechanism is in a pressing state with the upper sliding block, thereby realizing the locking function between the guide wire and the sliding block; when the sliding mechanism is located at the other side of the upper sliding block, the sliding mechanism is in a releasing state with the upper sliding block, thereby realizing the unlocking function between the guide wire and the sliding block.

[0012] Optionally, in the guide wire locking structure, the sliding mechanism, the upper sliding block, the guide wire and the lower sliding block are arranged in sequence from top to bottom in the handle assembly.

[0013] Optionally, the guide wire is a single-hook guide wire or a double-hook guide wire.

[0014] Optionally, in the guide wire locking structure, the sliding mechanism comprises a locking button with at least one through hole and a pin rod, and the pin rod is arranged on the locking button through the through hole.

[0015] Optionally, in the guide wire locking structure, the upper sliding block is provided with a groove for the guide wire to pass through, and the groove depth is less than the diameter of the guide wire; when the locking button presses the upper sliding block, the guide wire is locked with the upper sliding block and the lower sliding block.

[0016] Optionally, the handle assembly comprises a shell, the upper front end of the shell is provided with a sliding hole for mounting the locking button, and the two sides of the upper front end of the shell are respectively provided with inclined grooves; the locking button is clamped at the upper front end of the shell through the sliding hole and can move in the sliding hole; correspondingly, the upper sliding block is provided with an inclined surface matched with the inclined grooves, and the pin rod is clamped in the inclined grooves on both sides of the shell; under the guidance of the inclined grooves, the pin rod can make inclined surface movement on the upper sliding block, so that the locking button presses or leaves the surface of the upper sliding block, and the guide wire is in a pressing or releasing state with the upper sliding block and the lower sliding block, thereby realizing the locking or unlocking function.

[0017] Optionally, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell can be closed to become an integral whole, i.e. the handle body.

[0018] Optionally, the guide wire moving structure comprises a roller and a rack, one side of the roller is provided with a concentric gear engaged with the rack, and the upper front end of the rack is clamped with the lower sliding block; after the concentric gear is engaged with the rack, the rack can be driven to move forward or backward.

[0019] Optionally, the inner bottom of the shell is provided with a straight groove, and the lower front end of the rack is matched with the straight groove through a rack protrusion, so as to realize the sliding of the rack in the straight groove.

[0020] Optionally, the handle assembly further includes a coaxial needle, which includes a coaxial needle shank and a coaxial needle tube. The coaxial needle is located at the top of the housing, and the guide wire passes through the coaxial needle to maintain the straightness of the guide wire.

[0021] According to the technical solution of the present invention, the guide wire is pushed by a roller. Due to the force-saving effect of the gear, it is easier to send out or retract the guide wire. The handle is less likely to vibrate during operation, which improves the positioning accuracy of the guide wire. Attached Figure Description

[0022] For illustrative and not limiting purposes, the invention will now be described with reference to preferred embodiments thereof, particularly the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of a breast positioning needle with a roller-type guidewire movement structure according to the present invention.

[0024] Figure 2 This is an exploded schematic diagram of a breast positioning needle with a roller-type guidewire movement structure according to the present invention.

[0025] Figure 3 This is a schematic diagram of a breast positioning needle with a roller-type guidewire movement structure according to the present invention.

[0026] Figure 4 This is a schematic diagram of a breast positioning needle with a roller-type guidewire movement structure according to the present invention.

[0027] Among them, 1. Handle assembly, 11. Upper housing, 111. Sliding hole, 112. Inclined groove, 113. Roller sliding hole, 12. Lower housing, 121. Straight groove, 13. Coaxial needle, 131. Coaxial needle handle, 132. Coaxial needle tube, 2. Guide wire locking structure, 21. Sliding mechanism, 211. Locking button, 212. Pin, 213. Through hole, 22. Upper slider, 221. Inclined surface, 23. Lower slider, 24. Guide wire, 3. Guide wire moving structure, 31. Roller, 311. Concentric gear, 32. Rack, 321. Rack protrusion. Detailed Implementation

[0028] In a typical embodiment of the present invention, a breast positioning needle with a sliding mechanism is proposed, such as... Figure 1 As shown, the breast positioning needle includes a handle assembly 1, a guidewire locking structure 2, and a guidewire moving structure 3. Both the guidewire locking structure 2 and the guidewire moving structure 3 are disposed in the handle assembly 1. In terms of the needle insertion direction, the guidewire locking structure 2 is located at the front end of the handle assembly 1, and the guidewire moving structure 3 is located at the rear end of the handle assembly 1.

[0029] like Figure 2 ,3 and Figure 4 As shown in the figure, the guide wire locking structure 2 comprises a sliding mechanism 21, an upper sliding block 22 for the sliding mechanism to slide, a lower sliding block 23 matched with the upper sliding block, and a guide wire 24 between the upper sliding block and the lower sliding block. Specifically, the sliding mechanism 21 comprises a locking button 211 with at least one through hole 213, and a pin rod 212 located in the through hole 213 and penetrating the locking button 211, and exposed on both sides of the locking button 211. The upper sliding block 22 is provided with a groove for the guide wire 24 to pass through, and the depth of the groove is less than the diameter of the guide wire 24; when the locking button 211 is pressed against the upper sliding block 22, the guide wire 24 is locked with the upper sliding block 22 and the lower sliding block 23. The guide wire 24 can be a flexible single-hook guide wire.

[0030] The handle assembly 1 comprises an upper shell 11, a lower shell 12 and a coaxial needle 13; the upper shell 11 and the lower shell 12 can be closed into a handle body by means of insertion, and the handle body is provided with a detachable coaxial needle 13 at one end of the guide wire locking structure 2. The coaxial needle 13 comprises a coaxial needle handle 131 and a coaxial needle tube 132, and the coaxial needle tube 132 can be inserted into the coaxial needle handle 131 to form the coaxial needle 13. The front end (the end close to the guide wire locking structure 2) of the upper shell 11 is provided with a sliding hole 111 for installing the locking button 211 on the upper surface, and the two side surfaces are respectively provided with inclined grooves 112; the locking button 211 is clamped on the upper shell 11 through the sliding hole 111 and can move in the sliding hole 111, and correspondingly, the upper sliding block 22 is provided with an inclined surface 221 matched with the inclined grooves 112, and the pin rod 212 is clamped in the inclined grooves 112 on the two side surfaces of the upper shell, and under the guidance of the inclined grooves 112, the pin rod 212 can make inclined surface movement on the upper sliding block 22, so as to press or leave the surface of the upper sliding block 22, so that the guide wire 24 is in a pressed or relaxed state with the upper sliding block 22 and the lower sliding block 23, thereby realizing the locking or unlocking function of the guide wire 24 with the handle assembly 1. The rear end of the upper shell 11 is provided with a roller sliding hole 113 on the upper surface, and the bottom of the lower shell 12 is provided with a straight groove 121.

[0031] The guide wire moving structure 3 is a roller type guide wire moving structure, comprising a roller 31 and a rack 32, the roller 31 is exposed outside the upper shell 11 through the roller sliding hole 113, one side of the roller 31 is provided with a concentric gear 311 engaged with the rack 32, and the upper surface of the front end of the rack 32 is clamped with the lower sliding block 23; after the concentric gear 311 is engaged with the rack 32, the rack 32 can be driven to move forward or backward. The rack 32 is matched with the straight groove 121 through the front end lower rack protrusion 321, so as to realize the sliding of the rack 32 in the straight groove 121.

[0032] The breast positioning needle, in use, locks or unlocks the guide wire 24 and the slider through the locking button 211, and then drives the slider forward or backward through the roller 31 to realize the forward or backward movement of the guide wire 24. The guide wire 24 is kept in a straight line state in the coaxial needle 13 before positioning, and after being pushed forward by the roller 31, the end of the guide wire 24 extends out of the coaxial needle 13 and is spirally bent to pierce into the tissue to realize positioning. If it is found that the positioning position is wrong, the guide wire 24 can be pulled back through the roller 31, and the guide wire 24 is straightened at the position of the coaxial needle tip and can be retracted into the coaxial needle 13.

[0033] The above detailed description does not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can occur depending on design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A breast positioning needle having a roller-type guide wire moving structure, characterized by, The application relates to a breast positioning needle with a roller type guide wire moving structure. The breast positioning needle comprises a handle assembly, a guide wire locking structure, a guide wire moving structure and a shell. The guide wire locking structure comprises a sliding mechanism, an upper sliding block for the sliding mechanism to slide, a lower sliding block matched with the upper sliding block, and a guide wire between the upper sliding block and the lower sliding block, and the locking or unlocking of the guide wire between the upper sliding block and the lower sliding block is realized through the movement of the sliding mechanism. The sliding mechanism comprises a locking button with at least one through hole and a pin rod arranged on the locking button through the through hole. The upper sliding block is provided with a groove for the guide wire to pass through, and the groove depth is smaller than the diameter of the guide wire. When the locking button is pressed against the upper sliding block, the guide wire is locked with the upper sliding block and the lower sliding block. The guide wire moving structure comprises a roller and a rack, one side of the roller is provided with a concentric gear engaged with the rack, and the upper part of the front end of the rack is clamped with the lower sliding block.

2. The breast localization needle having a roller guide wire moving structure according to claim 1, wherein, When the roller rotates, the rack is driven through the concentric gear, the lower sliding block in the locking state is pushed to drive the guide wire to move forward or backward.

3. The breast localization needle having a roller guide wire moving structure according to claim 1, wherein The guide wire locking structure and the guide wire moving structure are arranged in the handle assembly.

4. The breast localization needle having a roller guide wire moving structure according to claim 1, wherein The handle assembly comprises a shell, the upper part of the front end of the shell is provided with a sliding hole for mounting the locking button, and the upper part of the front end of the shell is provided with inclined grooves on both sides. The locking button is clamped on the upper part of the front end of the shell through the sliding hole and can move in the sliding hole. Correspondingly, the pin rod is clamped in the inclined grooves on both sides of the shell, the upper sliding block is provided with an inclined surface matched with the inclined grooves, the pin rod can make inclined surface movement on the upper sliding block under the guidance of the inclined grooves, so that the locking button is pressed against or away from the surface of the upper sliding block, the guide wire is in the pressed or relaxed state with the upper sliding block and the lower sliding block, and the locking or unlocking function is realized.

6. The breast localization needle having a roller guide wire moving structure according to claim 1, wherein, The guide wire locking structure is located at one end of the handle assembly, and the guide wire moving structure is located at the other end of the handle assembly. The sliding mechanism, the upper sliding block, the guide wire and the lower sliding block are arranged in sequence from top to bottom in the handle assembly. When the sliding mechanism is located on one side of the upper sliding block, the sliding mechanism is in the pressed state with the upper sliding block, so that the locking function between the guide wire and the sliding block is realized. When the sliding mechanism is located on the other side of the upper sliding block, the sliding mechanism is in the relaxed state with the upper sliding block, so that the unlocking function between the guide wire and the sliding block is realized. The shell comprises an upper shell and a lower shell, and the upper shell and the lower shell can be closed to become a whole.

5. The breast positioning needle with the roller type guide wire moving structure according to claim 1, wherein The inner bottom of the shell is provided with a straight groove, the lower part of the front end of the rack is matched with the straight groove through a rack protrusion, and the sliding of the rack in the straight groove is realized. The handle assembly further comprises a coaxial needle and a needle tube, the coaxial needle is located at the top end of the shell, the end of the needle tube is arranged in the coaxial needle, and the guide wire penetrates the coaxial needle and the needle tube.

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