CN-121971122-A - Bone marrow puncture needle integrating adjustable limit and full grip anti-skid

CN121971122ACN 121971122 ACN121971122 ACN 121971122ACN-121971122-A

Abstract

The invention discloses an integrated adjustable limit and full grip anti-skid bone marrow puncture needle, which belongs to the field of medical instruments and comprises a needle core, an anti-skid grip, a depth limiting grip and a depth limiting grip, wherein the needle core is provided with a tip for puncture and a holding part for connection, a guide hole for the needle core to pass through is arranged along the axial direction of the anti-skid grip, the needle core and the anti-skid grip are detachably fixed through a clamping structure so as to limit the relative motion of the anti-skid grip and the needle core in the axial direction and the circumferential direction, the depth limiting grip comprises an adjusting nut connected to the outer wall of the anti-skid grip through a thread pair, and when the adjusting nut rotates around the central axis of the needle core, the adjusting nut drives the depth limiting grip and the anti-skid grip to generate axial relative displacement so as to adjust the protruding length of the tip of the needle core relative to the depth limiting grip. Through the arrangement, the invention can prevent the relative displacement of the axial direction and the circumferential direction of the needle core and the anti-slip grip when in use.

Inventors

TAN JIE
LI WENZHE
WANG YA
LI YUANJUN

Assignees

荆州市第一人民医院（荆州市肿瘤医院、长江大学附属第一医院）

Dates

Publication Date: 20260505
Application Date: 20260325

Claims (10)

1. An integrated adjustable stop and full grip anti-slip bone marrow puncture needle, comprising: A needle core having a tip for penetration and a grip for connection; The anti-slip handle is provided with a guide hole for the needle core to pass through along the axial direction, and the needle core and the anti-slip handle are detachably fixed through a clamping structure so as to limit the relative movement of the anti-slip handle and the needle core in the axial direction and the circumferential direction; The depth limiting handle comprises an adjusting nut connected to the outer wall of the anti-slip handle through a thread pair, and when the adjusting nut rotates around the central axis of the needle core, the depth limiting handle and the anti-slip handle are driven to generate axial relative displacement so as to adjust the protruding length of the tip of the needle core relative to the depth limiting handle.
2. The bone marrow puncture needle integrating adjustable limit and full grip anti-slip according to claim 1, wherein the clamping structure comprises an elastic buckle arranged on the holding part, wherein the elastic buckle is provided with limit protrusions along the radial direction of a needle core, a clamping groove arranged on the outer wall of the anti-slip grip, the clamping groove is provided with limit gaps along the radial direction, and when the needle core is connected with the anti-slip grip, the mutually matched clamping groove and the elastic buckle limit circumferential relative rotation of the needle core and the anti-slip grip, and the mutually matched limit protrusions and the mutually matched limit gaps limit axial relative sliding of the needle core and the anti-slip grip.
3. The bone marrow puncture needle integrating adjustable limit and full grip antiskid according to claim 1, wherein the antiskid grip comprises a connecting bolt, the thread pair comprises an external connecting thread arranged on the outer wall of the connecting bolt and an internal connecting thread arranged on the inner wall of the adjusting nut.
4. The bone marrow puncture needle integrating adjustable limit and full grip anti-skid according to claim 3, wherein the outer wall of the connecting bolt is provided with a number indicating plane parallel to the central axis of the connecting bolt, a scale mark is arranged on the number indicating plane along the length direction of the connecting bolt, and an observation hole is formed in the depth-limiting grip and used for exposing the scale mark.
5. The bone marrow puncture needle integrating adjustable limit and full grip antiskid as set forth in claim 3, wherein said antiskid grip further comprises a grip body and a first baffle fixedly connected, said first baffle is disposed between said grip body and said connecting bolt, and antiskid protrusions are uniformly distributed on the outer wall of said grip body.
6. The bone marrow puncture needle integrating adjustable stop and full grip antiskid according to claim 1, wherein said depth-limiting grip further comprises a handle coaxially rotatable with said adjustment nut.
7. The bone marrow puncture needle integrating adjustable limit and full grip skid resistance according to claim 6, wherein the depth-limiting grip further comprises a second baffle fixedly connected with the handle, the second baffle has a circular axial section, and the second baffle abuts against the body surface of a patient in use.
8. The bone marrow puncture needle integrating adjustable limit and full grip antiskid according to claim 6, wherein an antiskid sleeve is sleeved outside the handle of the depth-limiting grip.
9. The bone marrow puncture needle integrating adjustable limit and full grip antiskid according to claim 6, wherein the handle is provided with a connecting channel extending axially therethrough, and the antiskid grip extends at least partially into the connecting channel.
10. The bone marrow puncture needle integrating adjustable stop and full grip antiskid according to claim 1, wherein the needle core has three side edges.

Description

Bone marrow puncture needle integrating adjustable limit and full grip anti-skid Technical Field The invention belongs to the technical field of medical appliances, and particularly relates to a bone marrow puncture needle integrating adjustable limit and full grip anti-skid. Background Bone marrow aspiration is a common practice in departments such as clinical hematology, oncology, etc., for obtaining bone marrow fluid for diagnosis. Standard bone marrow puncture needles generally comprise a core for puncturing bones and a grip sleeved outside the core to provide a puncture channel for the needle, and a bolt structure for limiting the puncture depth is usually arranged outside the grip. The bone marrow puncture needle used clinically has the defects that the grip surface of the common puncture needle is smooth, the holding experience is poor and the needle is easy to slip in the process of applying force to rotate into the needle, so that the position accuracy and the operation efficiency of sampling operation are affected. The handle of the puncture needle is usually in threaded connection with the needle core, and bone marrow puncture is needed to drive the needle core to puncture bones through left and right rotation, so that the two-way rotation of the needle core is extremely easy to cause the threaded connection to be loosened or even loosened, and the safety risk that the needle core is separated from the handle exists. In the prior art, there is a proposal for attempting to solve some of the above problems, and chinese patent CN209695247U discloses an anti-rotation biopsy needle, which prevents the rotation of the needle bar due to false touch during operation by providing a rotation buckle, a limit buckle, a guide groove and other limit devices on the needle tube handle and the needle bar handle. However, the design aims at preventing the needle rod of the biopsy needle from being misplaced with the edge surface of the needle tube, ensuring the puncture strength, and has essentially different application scenes and technical problems from the problem of connection reliability of the bone marrow puncture needle which aims at solving the problems. Disclosure of Invention In order to overcome the existing defects pointed out in the background art, the invention provides an improved marrow puncture needle, which specifically solves the problems that the connection between a needle core and a grip is loose and the grip is easy to slip caused by the operation of rotating a needle, and specifically adopts the following technical scheme: The bone marrow puncture needle integrating the adjustable limit and the full grip for skid prevention comprises a needle core, an anti-skid grip, a depth limiting grip and an adjusting nut, wherein the needle core is provided with a tip for puncture and a holding part for connection, the tip and the holding part are distributed on two sides of the needle core in the axial direction, the anti-skid grip is axially provided with a guide hole for the needle core to pass through, the needle core and the anti-skid grip are detachably fixed through a clamping structure so as to limit the relative motion of the anti-skid grip and the needle core in the axial direction and the circumferential direction, the depth limiting grip comprises an adjusting nut connected to the outer wall of the anti-skid grip through a thread pair, and when the adjusting nut rotates around the central axis of the needle core, the depth limiting grip and the anti-skid grip are driven to generate axial relative displacement so as to adjust the protruding length of the tip of the needle core relative to the depth limiting grip. The reliable connection between the handle and the needle core in the rotary puncture operation is ensured through the buckle connection, and the stepless regulation of the puncture depth is realized through the screw thread pair, so that patients with different body types can be adapted. The clamping structure further comprises an elastic buckle arranged on the holding part, wherein limiting protrusions are arranged on the elastic buckle along the radial direction of the needle core, a clamping groove arranged on the outer wall of the anti-slip grip, limiting gaps are arranged on the clamping groove along the radial direction, and when the needle core is connected with the anti-slip grip, the clamping groove and the elastic buckle which are mutually matched limit the circumferential relative rotation of the needle core and the anti-slip grip, and the limiting protrusions and the limiting gaps which are mutually matched limit the axial relative sliding of the needle core and the anti-slip grip. Further, the anti-slip grip comprises a connecting bolt, and the thread pair comprises an external connecting thread arranged on the outer wall of the connecting bolt and an internal connecting thread arranged on the inner wall of the adjusting nut. Further, the outer wall of the connecting b