Puncture needle
By designing a puncture needle including a needle sleeve, a connector, a locking member and a handle, the problem of insertion of multiple puncture needles is solved, and a larger operating space and better fixation effect is achieved, and surgical operation is simplified.
Patent Information
- Application Number
- CN202322826103.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-20
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2033-10-20
AI Technical Summary
When the existing puncture needle is punctured in the 4/5th and 5th sacral 1 vertebrae, multiple puncture needle handles interfere with each other, resulting in a complex insertion process and limited operating space.
A puncture needle is designed, including a needle sleeve, a disassembled connector, a locking member and a handle, which strengthens the fixing effect through a threaded structure and a torsion-resistant structure, and simplifies the connection and separation process between the needle core and the needle sleeve through a sealing member.
This puncture needle can effectively solve the problem of interference with multiple needle insertion, release more surgical operation space, simplify fixation and separation operations, enhance fixation effect, and improve the accuracy and comfort of the operation.
Smart Images
Figure CN222640560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a puncture needle. Background Art
[0002] In the current medical field at home and abroad, surgical treatment of thoracolumbar degenerative diseases, lumbar instability, and intervertebral disc diseases requires a fixation method called pedicle screws to maintain the stability of the patient's spine. With the rapid advancement of medical imaging technology, traditional open surgery has gradually been replaced by minimally invasive surgery, which has made a significant contribution to the development of posterior spinal fixation surgery due to its advantages such as small incision, short operation time, less bleeding, and reduced postoperative inflammation. This has also given rise to the clinical application of percutaneous pedicle screws.
[0003] However, the clinical application of percutaneous pedicle screw products requires the establishment of a working channel for the placement of the screw, which requires the use of puncture technology, which is a key step in determining the success of the operation. Existing puncture instruments are mainly composed of a needle core with a handle (made of a non-developing polymer material) and an outer sleeve with a handle (made of a non-developing polymer material). Because the outer sleeve has a handle, the puncture process during surgery often causes interference between multiple puncture needle handles, especially in the L4 / 5 and L5-S1 vertebral segments.
[0004] Therefore, in clinical use, it is very necessary to design a device that can solve the interference problem of multiple puncture needles being inserted. Utility Model Content
[0005] The utility model aims to provide a puncture needle in view of the deficiencies in the prior art.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] The first aspect of the utility model provides a puncture needle, comprising: a needle sleeve, a connecting piece detachably sleeved on the proximal end of the needle sleeve, and a locking piece detachably sleeved on the outside of the connecting piece; wherein,
[0008] The needle sleeve is provided with a first needle core through hole along its axial direction; the needle sleeve comprises: a needle sleeve body, and a threaded structure fixedly arranged at the proximal end of the needle sleeve body;
[0009] Wherein, the thread structure has: a plurality of grooves, the grooves are opened from the outer edge of the thread structure to the middle of the thread structure, the grooves extend along the axial direction of the thread structure, and the maximum projection plane of the grooves is parallel to the first plane or the second plane;
[0010] The connecting member comprises: a second connecting portion, and a third connecting portion fixedly disposed at a proximal end of the second connecting portion;
[0011] Wherein, the second connection part is detachably sleeved on the threaded structure, and the second connection part has: a plurality of through grooves, the through grooves are opened along the radial direction of the second connection part, and the through grooves at least expose the threaded part on the threaded structure;
[0012] Wherein, the third connecting portion is provided with a second needle core through hole along its axial direction;
[0013] An inner wall at the distal end of the locking member is provided with an internal thread matching the thread structure.
[0014] Preferably, the needle sleeve further comprises: an anti-torsion structure fixedly disposed between the proximal end of the needle sleeve body and the distal end of the threaded structure.
[0015] Preferably, the anti-torsion structure has: a first plane, and a second plane that is not parallel to the first plane.
[0016] Preferably, the connecting member further comprises: a first connecting portion fixedly disposed at a distal end of the second connecting portion, and the first connecting portion is detachably sleeved on the outside of the anti-torsion structure.
[0017] Preferably, the plurality of grooves divide the thread structure into a plurality of annular arrays of threaded portions, and the threaded portions are exposed outside the through groove.
[0018] Preferably, a beam structure is formed between adjacent through grooves, and at least a portion of the beam structure is disposed in the groove.
[0019] Preferably, it further comprises: a handle, wherein the handle is detachably sleeved on the proximal exterior of the connecting member.
[0020] Preferably, it further comprises: a blocking member, wherein the blocking member is provided with a third needle core through hole along its axial direction, the blocking member is detachably sleeved on the proximal exterior of the connecting member, and the blocking member is detachably sleeved on the proximal interior of the handle.
[0021] Preferably, the blocking member cooperates with the proximal thread of the connecting member.
[0022] Preferably, a first through hole is provided on the handle, a first half hole is provided on the connecting member, a second half hole is provided on the blocking member, the first half hole matches the second half hole, a second through hole is formed by the first half hole and the second half hole, and the first through hole matches the second through hole.
[0023] Preferably, it further comprises: a fixing pin; the fixing pin sequentially passes through one end of the first through hole, the second through hole, and the other end of the first through hole.
[0024] Preferably, the third needle core through hole, the second needle core through hole, and the first needle core through hole are sequentially connected, and the third needle core through hole, the second needle core through hole, and the first needle core through hole are coaxially arranged.
[0025] Preferably, it further comprises: a needle core; the needle core is detachably arranged inside the third needle core through hole, the second needle core through hole, or the first needle core through hole.
[0026] Preferably, a ball limiting groove is further provided between the needle sleeve body and the anti-torsion structure.
[0027] Preferably, a targeting positioning platform is further provided in the middle portion of the needle sleeve body near the proximal end.
[0028] Preferably, a scale mark is also provided on the outer wall of the needle sleeve body.
[0029] Preferably, a circular cutting edge is also provided at the distal end of the needle sleeve body.
[0030] Preferably, a knurled pattern is also provided on the outer wall of the locking member.
[0031] Preferably, the distal end of the needle core is an asymmetric three-edged tip.
[0032] The second aspect of the utility model provides a puncture needle, comprising: a needle sleeve, a connecting piece detachably sleeved on the proximal end of the needle sleeve, and a locking piece detachably sleeved on the outside of the connecting piece; wherein,
[0033] The needle sleeve is provided with a first needle core through hole along its axial direction; the needle sleeve comprises: a needle sleeve body, and a threaded structure fixedly arranged at the proximal end of the needle sleeve body;
[0034] The connecting member comprises: a first connecting portion detachably sleeved on the outside of the needle sleeve, a second connecting portion fixedly arranged at the proximal end of the first connecting portion, and a third connecting portion fixedly arranged at the proximal end of the second connecting portion;
[0035] Wherein, the second connecting portion is provided with a second needle core through hole along its axial direction;
[0036] An inner wall at the distal end of the locking member is provided with an internal thread matching the thread structure.
[0037] Preferably, the needle sleeve further comprises: an anti-torsion structure fixedly disposed at the proximal end of the threaded structure, and the first connecting portion is detachably sleeved on the outside of the anti-torsion structure.
[0038] Preferably, the anti-torsion structure has: a first plane, and a second plane that is not parallel to the first plane.
[0039] Preferably, it further comprises: a handle, wherein the handle is detachably sleeved on the proximal exterior of the connecting member.
[0040] Preferably, it further comprises: a blocking member, wherein the blocking member is provided with a third needle core through hole along its axial direction, the blocking member is detachably sleeved on the proximal exterior of the connecting member, and the blocking member is detachably sleeved on the proximal interior of the handle.
[0041] Preferably, the blocking member cooperates with the proximal thread of the connecting member.
[0042] Preferably, a first connecting groove is formed on the connecting member, and a second connecting groove is formed on the handle, and the first connecting groove matches the second connecting groove.
[0043] Preferably, it further comprises: a fixing pin; the fixing pin sequentially passes through one end of the second connecting groove, the first connecting groove, and the other end of the second connecting groove.
[0044] Preferably, the third needle core through hole, the second needle core through hole, and the first needle core through hole are sequentially connected, and the third needle core through hole, the second needle core through hole, and the first needle core through hole are coaxially arranged.
[0045] Preferably, it further comprises: a needle core; the needle core is detachably arranged inside the third needle core through hole, the second needle core through hole, or the first needle core through hole.
[0046] Preferably, a ball limiting groove is further provided between the threaded structure and the anti-torsion structure.
[0047] Preferably, a circular cutting edge is also provided at the distal end of the pillowcase body.
[0048] Preferably, a knurled pattern is also provided on the outer wall of the locking member.
[0049] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:
[0050] The puncture needle of the utility model solves the problem of interference caused by the insertion of multiple puncture needles during surgery, thereby releasing more space for surgical operations; the puncture needle of the utility model, the needle core is threadedly connected to the needle sleeve through a blocking piece, and the fixing and separation operation steps are simplified; the puncture needle of the utility model, the anti-torsion structure can provide an excellent fixing effect, and can be quickly connected with a conventional quick-connect handle; the puncture needle of the utility model, the groove on the threaded structure and the beam structure on the second connecting part cooperate with each other, which can further enhance the fixing effect; the puncture needle of the utility model, through the cooperation of the targeted positioning platform and the reflecting light ball, can accurately determine the depth of insertion and the direction of puncture; the puncture needle of the utility model, the handle of the utility model is designed to imitate the gripping hand position, which enhances the comfort of use for the surgeon. BRIEF DESCRIPTION OF THE DRAWINGS
[0051] Figure 1 This is a schematic diagram of the structure of the puncture needle in Example 1 of the utility model;
[0052] Figure 2 This is a schematic cross-sectional view of the puncture needle in Example 1 of the utility model;
[0053] Figure 3 This is a schematic diagram of the structure of the needle sleeve in the puncture needle in Example 1 of the utility model;
[0054] Figure 4 Schematic diagram of the proximal local structure of the needle sleeve in the puncture needle in Example 1 of the utility model
[0055] Figure 5 This is a schematic diagram of the structure of the connecting piece in the puncture needle in Example 1 of the utility model;
[0056] Figure 6 This is a schematic diagram of the distal local structure of the connecting piece in the puncture needle in Example 1 of the utility model;
[0057] Figure 7 This is a schematic cross-sectional view of the connecting piece in the puncture needle in Example 1 of the utility model;
[0058] Figure 8 This is a schematic cross-sectional view of the locking member in the puncture needle in Example 1 of the utility model;
[0059] Fig. 9 This is a schematic cross-sectional view of the blocking member in the puncture needle in Example 1 of the utility model;
[0060] Figures 1 to 9 , the reference numerals include:
[0061] Needle sleeve 1; first needle core through hole 11; anti-torsion structure 12; first plane 121; second plane 122; threaded structure 13; connector 2; first connecting portion 21; second connecting portion 22; third connecting portion 23; second needle core through hole 231; locking member 3; handle 4; blocking member 5; third needle core through hole 51; needle core 6;
[0062] Fig.10 This is a schematic diagram of the structure of the puncture needle in Example 2 of the utility model;
[0063] Fig.11 This is a schematic cross-sectional view of the puncture needle in Example 2 of the utility model;
[0064] Fig.12 This is a schematic diagram of the structure of the needle sleeve in the puncture needle in Example 2 of the utility model;
[0065] Fig.13 This is a schematic cross-sectional view of the connecting piece in the puncture needle in Example 2 of the utility model;
[0066] Fig.14 This is a schematic cross-sectional view of the locking member in the puncture needle in Example 2 of the utility model;
[0067] Fig.15 This is a schematic cross-sectional view of the blocking member in the puncture needle in Example 2 of the utility model;
[0068] Figures 10 to 15 , the reference numerals include:
[0069] Needle sleeve 7; first needle core through hole 71; threaded structure 72; anti-torsion structure 73; first plane 731; second plane 732; connector 8; first connecting portion 81; second connecting portion 82; second needle core through hole 821; third connecting portion 83; locking member 9; handle 10; blocking member 14; needle core 15. DETAILED DESCRIPTION
[0070] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0071] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0072] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.
[0073] Example 1
[0074] like Figure 1-2 As shown, this embodiment provides a puncture needle, comprising: a needle sleeve 1, a connecting member 2 detachably sleeved on the proximal end of the needle sleeve 1, a locking member 3 detachably sleeved on the outside of the connecting member 2, a handle 4 detachably sleeved on the proximal end of the connecting member 2, a blocking member 5 detachably sleeved on the proximal end of the connecting member 2 and detachably sleeved on the proximal end of the handle 4, and a needle core 6; wherein,
[0075] like Figure 3-4 As shown, the needle sleeve 1 is provided with a first needle core through hole 11 along its axial direction; the needle sleeve 1 comprises: a needle sleeve body, a ball limiting groove fixedly arranged at the proximal end of the needle sleeve body, an anti-torsion structure 12 fixedly arranged at the proximal end of the ball limiting groove, and a threaded structure 13 fixedly arranged at the proximal end of the anti-torsion structure 12;
[0076] A targeting positioning platform is also provided in the middle of the needle sleeve body near the proximal end, a scale mark is also provided on the outer wall of the needle sleeve body, and a circular cutting edge is also provided at the distal end of the needle sleeve body;
[0077] The torsion-resistant structure 12 has: a first plane 121, a second plane 122 perpendicular to the first plane 121, a third plane perpendicular to the second plane 122 and parallel to the first plane 121, and a fourth plane perpendicular to the third plane and parallel to the second plane 122;
[0078] The thread structure 13 has: four grooves, the grooves are opened from the outer edge of the thread structure 13 to the middle of the thread structure 13, the grooves extend along the axial direction of the thread structure 13, the maximum projection plane of the grooves is parallel to the plane of the anti-torsion structure 12, and the grooves divide the thread structure 13 into threaded parts of an annular array;
[0079] like Figure 5-7 As shown, the connecting member 2 includes: a first connecting portion 21 detachably sleeved on the outside of the anti-torsion structure 12, a second connecting portion 22 fixedly arranged at the proximal end of the first connecting portion 21, and a third connecting portion 23 fixedly arranged at the proximal end of the second connecting portion 22;
[0080] The second connection part 22 is detachably sleeved on the threaded structure 13, and the second connection part 22 has: four through grooves, the through grooves are opened along the radial direction of the second connection part 22, the through grooves expose the threaded part on the threaded structure 13, and a beam structure is formed between adjacent through grooves, and the beam structure is arranged in the groove;
[0081] Those skilled in the art can understand that, when the number of planes of the anti-torsion structure 12 increases or decreases, the number of grooves of the threaded structure 13 also increases or decreases accordingly, and the number of through grooves of the second connection portion 22 also increases or decreases accordingly; for example: when the number of planes of the anti-torsion structure 12 increases to 5, the number of grooves of the threaded structure 13 also increases to 5 accordingly, and the threaded portions divided into annular arrays by the grooves also increase to 5 accordingly, so the number of through grooves of the second connection portion 22 also increases to 5 accordingly; for another example: when the number of planes of the anti-torsion structure 12 decreases to 3, the number of grooves of the threaded structure 13 also decreases to 3 accordingly, and the threaded portions divided into annular arrays by the grooves also decreases to 3 accordingly, so the number of through grooves of the second connection portion 22 also decreases to 3 accordingly;
[0082] The third connecting portion 23 is provided with a second needle core through hole 231 along its axial direction;
[0083] like Figure 8 As shown, an internal thread matching the thread structure 13 is provided on the inner wall of the distal end of the locking member 3, and a knurled pattern is also provided on the outer wall of the locking member 3;
[0084] The handle 4 is provided with a pair of first through holes;
[0085] The connecting member 2 is provided with a first half hole;
[0086] like Fig. 9 As shown, the blocking member 5 is provided with a third needle core through hole 51 along its axial direction, the blocking member 5 is threadedly matched with the proximal end of the connecting member 2, a second half hole is provided on the blocking member 5, the second half hole matches the first half hole, the first half hole and the second half hole are surrounded by a second through hole, the second through hole matches the first through hole, and a fixing pin is sequentially provided through one end of the first through hole, the second through hole, and the other end of the first through hole;
[0087] The needle core 6 is detachably arranged inside the third needle core through hole 51, the second needle core through hole 231, and the first needle core through hole 11 which are sequentially connected and coaxially arranged, and the distal end of the needle core 6 is an asymmetric three-edged tip.
[0088] Before use, the connector 2 is sleeved onto the proximal end of the needle sleeve 1, the first connector 21 cooperates with the anti-torsion structure 12, the through groove of the second connector 22 exposes the threaded portion of the threaded structure 13, and the beam structure between the through grooves of the second connector cooperates with the groove of the threaded structure 13;
[0089] The locking member 3 is sleeved onto the outside of the connecting member 2, and the proximal end of the locking member 3 is matched with the threaded portion of the threaded structure 13;
[0090] The proximal end of the needle core 6 is welded to the inside of the third needle core through hole 51 of the blocking member 5 (the length of the needle core 6 can be controlled), and the distal end of the needle core 6 passes through the second needle core through hole 231 and the first needle core through hole 11 in sequence;
[0091] The handle 4 is sleeved on the proximal exterior of the connecting member 2 (i.e., the exterior of the third connecting portion 23), and the blocking member 5 is sleeved on the proximal interior of the handle 4. The distal end of the blocking member 5 is threadedly engaged with the proximal end of the connecting member 2. The fixing pin passes through one end of the first through hole, the second through hole, and the other end of the first through hole in sequence, so as to achieve a straddling fit between the handle 4, the connecting member 2, and the blocking member 5.
[0092] When in use, the robot-specific tool sleeve (adapter) is used to determine the direction of insertion of the vertebral screw. The needle sleeve 1 slides in along the adapter, and the puncture needle is accurately inserted into the ideal direction of insertion by rotating or tapping the handle 4. The insertion depth can refer to the scale mark on the outer wall of the needle sleeve 1; the locking piece 3 is unscrewed to separate the needle sleeve 1 and the needle core 6, so as to remove the handle 4 and the needle core 6. The removal of the handle 4 can solve the problem of interference caused by the insertion of multiple puncture needles during surgery and release more surgical operation space; a robot-specific target is set at the proximal end of the targeting positioning platform of the needle sleeve 1: an X-shaped reflecting light ball, and is introduced into the robot system; according to the positioning of the reflecting light ball, the insertion depth and the puncture direction are accurately determined, and the insertion depth and direction of the puncture needle are directly observed; after the puncture is in place, a conventional instrument (for example: a guide needle) is introduced into the inside of the needle sleeve 1, and the needle sleeve 1 is removed to complete the minimally invasive puncture.
[0093] Example 2
[0094] like Figure 10-11 As shown, this embodiment provides another puncture needle, comprising: a needle sleeve 7, a connecting member 8 detachably sleeved on the proximal end of the needle sleeve 7, a locking member 9 detachably sleeved on the outside of the connecting member 8, a handle 10 detachably sleeved on the proximal end of the connecting member 8, a blocking member 14 detachably sleeved on the proximal end of the connecting member 8 and detachably sleeved on the proximal end of the handle 10, and a needle core 15; wherein,
[0095] like Fig.12 As shown, the needle sleeve 7 is provided with a first needle core through hole 71 along its axial direction; the needle sleeve 7 comprises: a needle sleeve body, a ball limiting groove fixedly arranged at the proximal end of the needle sleeve body, a thread structure 72 fixedly arranged at the proximal end of the ball limiting groove, and an anti-torsion structure 73 fixedly arranged at the proximal end of the thread structure 72;
[0096] A targeting positioning platform is also provided in the middle of the needle sleeve body near the proximal end, a scale mark is also provided on the outer wall of the needle sleeve body, and a circular cutting edge is also provided at the distal end of the needle sleeve body;
[0097] The anti-torsion structure 73 has: a first plane 731, a second plane 732 perpendicular to the first plane 731, a third plane perpendicular to the second plane 732 and parallel to the first plane 731, and a fourth plane perpendicular to the third plane and parallel to the second plane 732;
[0098] like Fig.13 As shown, the connecting member 8 includes: a first connecting portion 81 detachably sleeved on the outside of the anti-torsion structure 73, a second connecting portion 82 fixedly arranged at the proximal end of the first connecting portion 81, and a third connecting portion 83 fixedly arranged at the proximal end of the second connecting portion 82;
[0099] The second connecting portion 82 is provided with a second needle core through hole 821 along its axial direction, and the second connecting portion 82 is provided with a pair of first connecting grooves;
[0100] like Fig.14 As shown, an internal thread matching the thread structure 72 is provided on the inner wall of the distal end of the locking member 9, and a knurled pattern is also provided on the outer wall of the locking member 9;
[0101] The handle 10 is provided with a pair of second connecting grooves, the second connecting grooves match the first connecting grooves, and fixing pins are sequentially provided through one end of the second connecting groove, the first connecting groove, and the other end of the second connecting groove;
[0102] like Fig.15 As shown, the blocking member 14 is provided with a third needle core through hole 141 along its axial direction, and the blocking member 14 is matched with the proximal thread of the connecting member 8;
[0103] The needle core 15 is detachably disposed inside the third needle core through hole 141 , the second needle core through hole 821 , and the first needle core through hole 71 , which are sequentially connected and coaxially disposed. The distal end of the needle core 15 is an asymmetric three-edged tip.
[0104] In a preferred embodiment, the handle 10 is an injection molded part, that is, the connecting member 8 provided with the locking member 9 is injection molded with the handle 10 as an insert. In other words, the fixing pin is injection molded together with the handle 10 and passes through the first connecting groove.
[0105] Before use, the connector 8 is sleeved onto the proximal end of the needle sleeve 7, and the first connector 81 cooperates with the anti-torsion structure 73;
[0106] Engage the proximal end of the locking member 9 with the threaded structure 72;
[0107] The proximal end of the needle core 15 is welded to the inside of the third needle core through hole of the blocking member 14 (the length of the needle core 6 can be controlled), and the distal end of the needle core 6 passes through the second needle core through hole 821 and the first needle core through hole 71 in sequence;
[0108] (The handle 10 has been pre-injection-molded with the connector 8), the blocking member 14 is sleeved inside the proximal end of the handle 10, and the distal end of the blocking member 14 is threadedly matched with the proximal end of the connector 8 (ie, the third connecting portion 83).
[0109] When in use, the insertion point of the puncture needle is determined by the positioning plate and perspective, and the puncture needle is inserted at an inward tilt angle by rotating or tapping the handle 10. The position of the insertion point is observed by imaging, and the direction is adjusted (because the transverse diameter and the anterior-posterior direction of the pedicle are originally larger than the puncture needle) until the puncture direction is accurate. The insertion depth can refer to the scale mark on the outer wall of the needle sleeve 7; unscrewing the locking piece 9, the needle sleeve 7 and the needle core 15 can be separated to remove the handle 10 and take out the needle core 15. Removal of the handle 10 can solve the problem of interference caused by the insertion of multiple puncture needles during surgery and release more surgical operation space; conventional instruments (for example: guide needles) are introduced along the needle sleeve 7; general instruments (for example: T-shaped quick-change handles) can be matched with the ball limit groove to quickly connect and then remove the needle sleeve 7, retain the guide needle, and implement subsequent minimally invasive nailing; if the distal end of the needle core 15 is blunted, it can be replaced by unscrewing the blocking piece 14.
[0110] The puncture needle of the utility model solves the problem of interference caused by the insertion of multiple puncture needles during surgery, thereby releasing more space for surgical operations; the puncture needle of the utility model, the needle core is threadedly connected to the needle sleeve through a blocking piece, and the fixing and separation operation steps are simplified; the puncture needle of the utility model, the anti-torsion structure can provide an excellent fixing effect, and can be quickly connected with a conventional quick-connect handle; the puncture needle of the utility model, the groove on the threaded structure and the beam structure on the second connecting part cooperate with each other, which can further enhance the fixing effect; the puncture needle of the utility model, through the cooperation of the targeted positioning platform and the reflecting light ball, can accurately determine the depth of insertion and the direction of puncture; the puncture needle of the utility model, the handle of the utility model is designed to imitate the gripping hand position, which enhances the comfort of use for the surgeon.
[0111] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.
Claims
1. A puncture needle, characterized in that: include: A needle sleeve (1), a connecting piece (2) detachably sleeved on the outside of the proximal end of the needle sleeve (1), and a locking piece (3) detachably sleeved on the outside of the connecting piece (2); wherein: The needle sleeve (1) is provided with a first needle core through hole (11) along its axial direction; the needle sleeve (1) comprises: a needle sleeve body, and a threaded structure (13) fixedly arranged at the proximal end of the needle sleeve body; The thread structure (13) comprises: a plurality of grooves, the grooves are opened from the outer edge of the thread structure (13) to the middle of the thread structure (13), the grooves extend along the axial direction of the thread structure (13), and the maximum projection plane of the grooves is parallel to the first plane or the second plane; The connecting member (2) comprises: a second connecting portion (22), and a third connecting portion (23) fixedly arranged at the proximal end of the second connecting portion (22); The second connecting portion (22) is detachably sleeved on the threaded structure (13), and the second connecting portion (22) has: a plurality of through grooves, the through grooves are opened along the radial direction of the second connecting portion (22), and the through grooves at least expose the threaded portion on the threaded structure (13); Wherein, the third connecting portion (23) is provided with a second needle core through hole (231) along its axial direction; An inner wall at the distal end of the locking member (3) is provided with an internal thread matching the thread structure (13).
2. The puncture needle according to claim 1, characterized in that: The needle sleeve (1) further comprises: an anti-torsion structure (12) fixedly arranged between the proximal end of the needle sleeve body and the distal end of the threaded structure (13); the connecting member (2) further comprises: a first connecting portion (21) fixedly arranged at the distal end of the second connecting portion (22); wherein, The anti-torsion structure (12) has: a first plane and a second plane that is not parallel to the first plane; The first connecting portion (21) is detachably sleeved on the outside of the anti-torsion structure (12).
3. The puncture needle according to claim 1, characterized in that: The plurality of grooves divide the thread structure (13) into a plurality of threaded portions in an annular array, and the threaded portions are exposed outside the through grooves; a beam structure is formed between adjacent through grooves, and at least a portion of the beam structure is arranged in the grooves.
4. The puncture needle according to claim 1, characterized in that: Also includes: A handle (4), wherein the handle (4) is detachably sleeved on the proximal exterior of the connecting member (2).
5. The puncture needle according to claim 4, characterized in that: Also includes: A blocking member (5), wherein the blocking member (5) is provided with a third needle core through hole (51) along its axial direction, and the blocking member (5) is detachably sleeved on the proximal end of the connecting member (2), and the blocking member (5) is detachably sleeved on the proximal end of the handle (4).
6. The puncture needle according to claim 5, characterized in that: Also includes: Fixed pin; The handle (4) is provided with a first through hole; The connecting member (2) is provided with a first half hole, the blocking member (5) is provided with a second half hole, the first half hole matches the second half hole, the first half hole and the second half hole form a second through hole, the first through hole matches the second through hole; the fixing pin passes through one end of the first through hole, the second through hole, and the other end of the first through hole in sequence.
7. The puncture needle according to claim 5, characterized in that: Also includes: Needle core (6); The third needle core through hole (51), the second needle core through hole (231), and the first needle core through hole (11) are connected in sequence, and the third needle core through hole (51), the second needle core through hole (231), and the first needle core through hole (11) are all coaxially arranged, and the needle core (6) is detachably arranged inside the third needle core through hole (51), the second needle core through hole (231), or the first needle core through hole (11).
8. A puncture needle, characterized in that: include: A needle sleeve (7), a connecting piece (8) detachably sleeved on the outside of the proximal end of the needle sleeve (7), and a locking piece (9) detachably sleeved on the outside of the connecting piece (8); wherein, The needle sleeve (7) is provided with a first needle core through hole (71) along its axial direction; the needle sleeve (7) comprises: a needle sleeve body, and a threaded structure (72) fixedly arranged at the proximal end of the needle sleeve body; The connecting member (8) comprises: a first connecting portion (81) detachably sleeved on the outside of the needle sleeve (7), a second connecting portion (82) fixedly arranged at the proximal end of the first connecting portion (81), and a third connecting portion (83) fixedly arranged at the proximal end of the second connecting portion (82); Wherein, the second connecting portion (82) is provided with a second needle core through hole (821) along its axial direction; An inner wall at the distal end of the locking member (9) is provided with an internal thread matching the thread structure (72).
9. The puncture needle according to claim 8, characterized in that: The needle sleeve (1) further comprises: an anti-torsion structure (73) fixedly arranged at the proximal end of the threaded structure (72); wherein: The anti-torsion structure (73) has: a first plane and a second plane that is not parallel to the first plane; The first connecting portion (81) is detachably sleeved on the outside of the anti-torsion structure (73).
10. The puncture needle according to claim 8, characterized in that: Also includes: A handle (10) is detachably sleeved on the proximal exterior of the connecting member (8).
11. The puncture needle according to claim 10, characterized in that: Also includes: A blocking member (14), wherein the blocking member (14) is provided with a third needle core through hole along its axial direction, and the blocking member (14) is detachably sleeved on the proximal end of the connecting member (8), and the blocking member (14) is detachably sleeved on the proximal end of the handle (10).
12. The puncture needle according to claim 11, characterized in that: Also includes: Fixed pin; The connecting member (8) is provided with a first connecting groove, and the handle (10) is provided with a second connecting groove, and the first connecting groove matches the second connecting groove; The fixing pin sequentially passes through one end of the second connecting groove, the first connecting groove, and the other end of the second connecting groove.
13. The puncture needle according to claim 11, characterized in that: Also includes: Needle core (15); The third needle core through hole, the second needle core through hole (821), and the first needle core through hole (71) are connected in sequence, and the third needle core through hole, the second needle core through hole (821), and the first needle core through hole (71) are all coaxially arranged, and the needle core (15) is detachably arranged inside the third needle core through hole, the second needle core through hole (821), or the first needle core through hole (71).