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CN-224214334-U - Structure for identifying opening and closing states of peristaltic pump

CN224214334UCN 224214334 UCN224214334 UCN 224214334UCN-224214334-U

Abstract

The utility model relates to the technical field of peristaltic pumps, in particular to a structure for identifying the opening and closing states of a peristaltic pump, which comprises a shell and a cover body, wherein the cover body comprises a rotating part and a moving part, the moving part is arranged on the shell in a sliding manner, the rotating part is rotationally connected to the moving part, the moving part is enabled to reciprocate along the longitudinal direction of the shell through the rotation of the rotating part, a contact device is arranged on the shell and respectively generates a first signal and a second signal based on the contact or the separation of the moving part, and the corresponding moving part is positioned at the first position and the second position.

Inventors

  • SATO AYUMI
  • CHEN WEIDONG

Assignees

  • 苏州海思临科医学科技有限公司

Dates

Publication Date
20260508
Application Date
20250626

Claims (5)

  1. 1. A structure for identifying the open and closed state of a peristaltic pump, comprising: a housing (1); A cover body (2), wherein the cover body (2) comprises a rotating part (21) and a moving part (22), the moving part (22) is arranged on the shell (1) in a sliding way, the rotating part (21) is rotationally connected to the moving part (22), and the moving part (22) reciprocates along the longitudinal direction of the shell (1) through the rotation of the rotating part (21); A contact device (3) mounted on the housing (1) and generating a first signal and a second signal based on the movement of the moving part (22) contacting or moving away from the contact device, wherein the corresponding moving part (22) is positioned at a first position and a second position; The contact device (3) comprises a mounting part (31) and a triggering part (32), the mounting part (31) is mounted on the side wall of the shell (1), the triggering part (32) is provided with a feeler lever (321), one end of the triggering part is hinged with the triggering part (32), when the other end of the feeler lever (321) is close to the triggering part (32), the contact device (3) generates a first signal, and when the other end of the feeler lever (321) is far away from the triggering part (32), the contact device (3) generates a second signal.
  2. 2. The structure for identifying the opening and closing state of the peristaltic pump according to claim 1, wherein a groove (221) is formed on one side of the moving part (22) close to the contact device (3), and an abutting part (222) is formed, and when the moving part (22) is located at the first position, the abutting part (222) contacts with and presses against the contact rod (321).
  3. 3. The structure for recognizing the open-close state of the peristaltic pump according to claim 2, wherein the abutting portion (222) is adjacent to the triggering portion (32), and the top of the feeler lever (321) is hinged to the triggering portion (32), and when the moving portion (22) moves down, the moving portion (22) presses the feeler lever (321) so that the feeler lever (321) gradually approaches the triggering portion (32).
  4. 4. The structure for identifying the opening and closing states of the peristaltic pump according to claim 2, wherein the mounting portion (31) is a PCB, and the PCB is externally connected with an alarm system.
  5. 5. The structure for identifying the opening and closing state of the peristaltic pump according to claim 2, wherein a torsion spring is arranged at the hinge position of the feeler lever (321), and when the abutting part (222) is separated from the feeler lever (321), the torsion spring drives the feeler lever (321) to return to the initial position.

Description

Structure for identifying opening and closing states of peristaltic pump Technical Field The utility model relates to the technical field of peristaltic pumps, in particular to a structure for identifying the opening and closing states of a peristaltic pump. Background At the moment of the development of minimally invasive tumor treatment, the ablation technologies such as radio frequency ablation, microwave ablation and the like have become the mainstream treatment means in the field by virtue of the remarkable advantages of small wound, quick recovery and the like. Ablation needles serve as core instruments for performing ablation therapy and play a vital role in the surgical procedure. It needs to destroy the tumor tissue accurately in high temperature environment to reach the aim of treatment. However, in this procedure, ensuring the safety and effectiveness of the procedure is critical, and the cooling system is a key element to ensure this. Peristaltic pumps are widely used in ablation needle cooling systems by virtue of their unique non-contaminating delivery characteristics. The needle body temperature is effectively maintained by circularly conveying cooling liquid (such as cold saline), carbonization and thermal damage of tissues caused by high temperature are prevented, and meanwhile, blockage of a needle point caused by overheating is avoided, so that smooth operation is ensured. However, the existing peristaltic pump structure has a certain limitation, and an opening and closing state identification module is not integrated, so that the peristaltic pump cannot directly sense the abnormal state of the end cover. In clinical actual work, medical staff can only indirectly judge whether the peristaltic pump fails through some indirect indexes such as flow fluctuation, pump body vibration and the like. However, these indirect judgment methods have significant hysteresis. Taking a peristaltic pump of some type as an example, the flow monitoring error may be as high as + -15% before the end cap is disengaged, which results in a delay of more than 30 seconds for the healthcare worker to respond to the fault. During surgery, each second is critical, and such long fault response delays can seriously affect the continuity of the surgery and may even adversely affect the patient's treatment. In addition, when the cooling pipe is blocked, the water pressure can be increased rapidly, so that the end cover can be separated, and finally the peristaltic pump can not continuously and normally convey cooling water, thereby further threatening the safety and effect of the operation. Therefore, the application develops a structure for identifying the opening and closing states of the peristaltic pump so as to solve the problems in the prior art. Disclosure of utility model The utility model aims to provide a structure for identifying the opening and closing states of a peristaltic pump, which solves the problem that cooling water cannot be normally conveyed because the end cover of the peristaltic pump cannot be timely separated in the prior art. The technical scheme of the utility model is that the peristaltic pump opening and closing state identifying structure comprises: A housing; The cover body comprises a rotating part and a moving part, the moving part is arranged on the shell in a sliding way, the rotating part is rotationally connected to the moving part, and the moving part can reciprocate along the longitudinal direction of the shell through the rotation of the rotating part; and the contact device is arranged on the shell, and generates a first signal and a second signal respectively based on the contact or separation action of the moving part and the contact device, and the corresponding moving part is positioned at a first position and a second position. Preferably, the contact device includes a mounting portion and a triggering portion, the mounting portion is mounted on the side wall of the housing, the triggering portion has a feeler lever, one end of the feeler lever is hinged to the triggering portion, when the other end of the feeler lever is close to the triggering portion, the contact device generates the first signal, and when the other end of the feeler lever is far away from the triggering portion, the contact device generates the second signal. Preferably, a groove is formed on one side of the moving part, which is close to the contact device, and an abutting part is formed, and when the moving part is located at the first position, the abutting part contacts with and compresses the contact rod. Preferably, the abutting portion is adjacent to the triggering portion, the top of the feeler lever is hinged to the triggering portion, and when the moving portion moves downwards, the moving portion presses the feeler lever, so that the feeler lever gradually approaches the triggering portion. Preferably, the mounting plate is a PCB board, and the PCB board is externally connected with an alarm s