CN-121987925-A - Medical locking system and medical locking method

CN121987925ACN 121987925 ACN121987925 ACN 121987925ACN-121987925-A

Abstract

The invention provides a medical locking system and a medical locking method. The handle includes a first locking member, and the locking device includes a second locking member and a clamping member. The first and second locking members are switchable relative to each other between a locked configuration and an unlocked configuration to selectively control locking and unlocking between the locking device and the handle, and the clamping member is switchable between frictionally engaging the catheter and releasing the catheter to selectively control locking and unlocking between the locking device and the catheter. The medical locking system and the medical locking method can avoid relative sliding between the handle and the catheter by utilizing the locking device for locking, thereby effectively guaranteeing the stability between the handle and the catheter and greatly improving the safety of the operation.

Inventors

ZHAO ZIHAO
LI LIGUANG
LI YANG

Assignees

杭州德晋医疗科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241108

Claims (10)

1. A medical locking system, the medical locking system comprising: A handle comprising a first locking member; Catheter, and The locking device comprises a second locking member and a clamping member, the first and second locking members being switchable relative to each other between a locked configuration and an unlocked configuration to selectively control locking and unlocking between the locking device and the handle, the clamping member being switchable between frictionally engaging the catheter and releasing the catheter to selectively control locking and unlocking between the locking device and the catheter.
2. The medical locking system of claim 1, wherein the second locking member is disposed on the clamp member, the clamp member being circumferentially nestable about the catheter and configured to have a tightened configuration in which the clamp member is frictionally circumferentially engaged to an outer surface of the catheter and a released configuration in which the clamp member is disengaged from frictional engagement with the catheter.
3. The medical locking system of claim 2, wherein the clamp member comprises a sleeve, a knob, and a collet, the knob is threadably coupled to the sleeve, the collet is movably disposed between the knob and the sleeve, the knob is configured to rotate relative to the sleeve, and the collet is axially movable and radially clamps or radially releases the catheter under the co-abutment of the sleeve and the knob.
4. The medical locking system of claim 3, wherein an inner surface of one end of the sleeve is provided with an internal thread for threaded engagement with the knob and an inner surface of the other end of the sleeve is provided with a first tapered surface for tapered abutment with a second tapered surface of the collet.
5. The medical locking system of claim 4, wherein the taper of the second taper is less than the taper of the first taper.
6. The medical locking system of claim 4, wherein the knob includes an engagement end and a drive end of increased outer diameter, at least a portion of an outer surface of the engagement end having external threads that engage the internal threads, the engagement end being threadably coupled within the sleeve, the drive end being permanently constrained to the sleeve.
7. The medical locking system of claim 3, wherein the sleeve is provided with a first circumferentially extending anti-slip portion and the knob is provided with a second circumferentially extending anti-slip portion, and wherein the first and second anti-slip portions are configured such that the anti-slip bosses are always positioned in the anti-slip grooves when the knob is rotated relative to the sleeve.
8. A medical locking system according to claim 3, wherein: The collet is a collet, in the release configuration at least a portion of the collet is configured to be radially offset relative to the conduit, in the secured configuration the at least a portion of the collet is urged against by the sleeve to elastically deform to circumferentially clamp the conduit, or When the knob rotates relative to the sleeve to drive the compression chuck to axially move, the inner wall of the compression chuck can circumferentially shrink under the abutment of the taper of the sleeve and the abutment of the taper of the knob.
9. The medical locking system of claim 8, wherein the collet comprises a spring end and a reduced outer diameter abutment end, wherein a stepped engagement surface is formed between the spring end and the abutment end, wherein the abutment end is movably received within the knob, wherein the stepped engagement surface is configured to abut the knob and constrain the spring end out of the knob to resiliently abut the sleeve.
10. The medical locking system of any one of claims 1-9, wherein in the locked configuration the first locking member and the second locking member are capable of interlocking to control the locking device to remain stationary relative to the handle, and wherein in the unlocked configuration the first locking member and the second locking member are de-interlocked to control the removal of the locking device from the handle.

Description

Medical locking system and medical locking method Technical Field The invention relates to the technical field of medical instruments, in particular to a medical locking system and a medical locking method. Background Minimally invasive interventional therapy is a minimally invasive technique that involves introducing a therapeutic tool or drug into the diseased tissue of a patient under image guidance with minimal trauma and performing physical, mechanical, or chemical treatment on the diseased tissue. In view of the fact that minimally invasive interventions do not require traditional chest opening or large-area incision surgery, they are characterized by small trauma, rapid recovery, and few complications, which makes minimally invasive interventions the preferred choice for patients with cardiovascular disease, especially for high-risk patients who cannot tolerate traditional surgery. Among them, the minimally invasive interventional therapy of structural heart disease mainly involves repair, replacement or closure of the internal structures of the heart, and the minimally invasive interventional therapy commonly seen at present includes aortic valve replacement, mitral valve repair, left auricle occlusion, etc. Generally, such procedures require stable medical instruments or stable coordination between multiple medical instruments to ensure delivery of therapeutic tools or drugs to the lesion site inside the patient's heart. However, the prior art often appears in the surgical procedure, and the safety of the operation may be affected when serious, because of poor stability between two parts of the medical apparatus or instability between two medical apparatuses, which may cause relative slippage and cause various unexpected risks. Disclosure of Invention The invention aims to provide a medical locking system and a medical locking method, which utilize the locking of a locking device to avoid relative sliding between a handle and a catheter, thereby effectively guaranteeing the stability between the handle and the catheter and greatly improving the safety of operation. To achieve the above object, in a first aspect, the present invention provides a medical locking system comprising: A handle comprising a first locking member; Catheter, and The locking device comprises a second locking member and a clamping member, the first and second locking members being switchable relative to each other between a locked configuration and an unlocked configuration to selectively control locking and unlocking between the locking device and the handle, the clamping member being switchable between frictionally engaging the catheter and releasing the catheter to selectively control locking and unlocking between the locking device and the catheter. In one embodiment, the second locking member is disposed on the clamp member, the clamp member being circumferentially nestable about the catheter and configured to have a tightened configuration in which the clamp member is frictionally circumferentially engaged to an outer surface of the catheter and a released configuration in which the clamp member is disengaged from frictional engagement with the catheter. In one embodiment, the clamping member comprises a sleeve, a knob and a chuck, the knob is in threaded connection with the sleeve, the chuck is movably arranged between the knob and the sleeve, the knob is configured to rotate relative to the sleeve, and the chuck can axially move and radially clamp or radially release the catheter under the joint propping of the sleeve and the knob. In one embodiment, the inner surface of one end of the sleeve is provided with an internal thread for being in threaded connection with the knob, and the inner surface of the other end of the sleeve is provided with a first conical surface for being in conical abutting connection with the second conical surface of the chuck. In one embodiment, the taper of the second taper is less than the taper of the first taper. In one embodiment, the knob includes an engagement end and a driving end of increased outer diameter, at least a portion of an outer surface of the engagement end having an external thread engaged with the internal thread, the engagement end being threadably coupled within the sleeve, the driving end being always constrained to the sleeve exterior. In one embodiment, the sleeve is provided with a first anti-drop part extending in the circumferential direction, the knob is provided with a second anti-drop part extending in the circumferential direction, and when the knob rotates relative to the sleeve, the anti-drop bosses of the first anti-drop part and the second anti-drop part are always positioned in the anti-drop groove. In one embodiment, the collet is a collet, at least a portion of the collet is configured to be radially offset relative to the conduit in the released configuration, the at least a portion of the collet is urged against by the sleeve to resiliently deform to