CN-121993417-A - Split type pump device

CN121993417ACN 121993417 ACN121993417 ACN 121993417ACN-121993417-A

Abstract

The invention provides a split type pump device which comprises a pump head, a pump machine, a locking assembly and an in-place detection sensor, wherein the pump head is detachably connected with the pump machine, the locking assembly comprises a first part arranged on the pump head and a second part arranged on the pump machine, the locking assembly is configured to rotate along with the pump head in the circumferential direction after the pump head is axially installed in the pump machine, the first part is matched with the second part to lock the position of the pump head relative to the pump machine in the axial direction and the circumferential direction, the in-place detection sensor is arranged on the pump machine and used for acquiring in-place information of the pump head, and the pump machine is configured to be prevented from being started or closed when the in-place information is not installed or not installed in place. By the configuration, the double-insurance type verification of the assembly reliability can be realized, and the assembly reliability and the safety of the split type pump device are effectively improved.

Inventors

MA SICONG
YU BINLEI

Assignees

微创外科医疗科技(上海)有限公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (10)

1. The split pump device is characterized by comprising a pump head, a pump machine, a locking assembly and an in-situ detection sensor; The locking assembly comprises a first part arranged on the pump head and a second part arranged on the pump machine, and is configured to rotate along with the pump head along the circumferential direction after the pump head is axially arranged in the pump machine, and the first part is matched with the second part so as to lock the position of the pump head relative to the pump machine along the axial direction and the circumferential direction; The pump head is arranged on the pump head, the on-site detection sensor is arranged on the pump head and used for acquiring on-site information of the pump head, and the pump head is configured to be prevented from being started or closed when the on-site information is not installed or installed in place.
2. The split pump apparatus of claim 1, wherein the first portion comprises a lock disposed radially of the pump head, the second portion comprises a trigger having a lock tab and a shaft, the trigger is rotatably disposed on the pump about the shaft and is configured to engage and disengage the lock tab from the lock head by rotation about the shaft, and the lock tab engages the lock head to lock the circumferential position of the pump head relative to the pump.
3. The split pump apparatus of claim 2, wherein the second portion comprises a first potential energy portion for applying a potential energy force to the trigger toward a locking direction.
4. The split pump apparatus of claim 2, wherein the lock head and the lock tongue are configured such that when the pump is rotated toward the locked position, the lock head drives the trigger to rotate in an unlocking direction by pushing the lock tongue until the lock head passes over the lock tongue, the trigger rotates in a locking direction, and the lock tongue engages with the lock head.
5. The split pump apparatus of claim 2, wherein the pump includes a collar circumferentially disposed about the shaft, the trigger includes a bearing sleeved on the shaft and a stop surrounding the bearing, the stop is axially coupled to the collar and is allowed to rotate circumferentially relative thereto to close the bearing and the shaft.
6. The split pump apparatus of claim 5 wherein said trigger has an annular cavity between said stop and said bearing, said annular cavity being filled with a lubricating wax.
7. The split type pump apparatus according to claim 1, wherein the first portion includes a rotation limiting block and a slider movably disposed in an axial direction of the pump head, the second portion includes a first blocking wall and a second blocking wall arranged opposite to each other in a circumferential direction of the pump, and the rotation limiting block moves in the axial direction to an engagement position and abuts against the second blocking wall when the rotation limiting block rotates with the pump head to abut against the first blocking wall, and locks a circumferential position of the pump head with respect to the pump.
8. The split pump unit of claim 7, wherein the first portion includes a second potential energy portion for applying a potential energy force to the slider block toward a locking direction.
9. The split pump apparatus of claim 1, wherein the first portion includes a first abutment surface and the second portion includes a second abutment surface, the first abutment surface and the second abutment surface being disposed axially, the first abutment surface and the second abutment surface abutting upon rotation of the pump to the locked position to lock an axial position of the pump head relative to the pump.
10. The split pump apparatus of claim 1, wherein the in-situ sensor comprises an eddy current sensor and/or a hall sensor.

Description

Split type pump device Technical Field The invention relates to the technical field of medical equipment, in particular to a split type pump device. Background In the medical field, in view of safety and cost, a disposable consumable material is often used in combination with a reusable device. Based on this, some medical pump devices are configured to include a single-use pump head and a pump that is reusable multiple times. Before use, the pump head needs to be assembled with the pump machine, and when the pump head is used or replaced, the pump head needs to be conveniently detached from the pump machine. For the medical pump device, whether the pump head and the pump machine are assembled in place or not, the reliability has great influence on the medical process, and once the pump head and the pump machine are not assembled in place or separated from each other, the pump machine still operates, so that the operation safety is easily affected. However, the existing medical pump devices often have only mechanical locking structures, which require manual installation by an operator and repeated confirmation. On the other hand, the mechanical locking structure can not monitor the assembly condition of the medical pump device in operation, once the problem that the pump head is separated from the pump machine due to false touch or fault in operation is caused, the problem is difficult to discover and treat in time. Disclosure of Invention The invention aims to provide a split type pump device, which solves the problem of low reliability caused by the fact that the existing pump device only adopts a mechanical locking structure. In order to solve the technical problems, the invention provides a split type pump device, which comprises a pump head, a pump machine, a locking component and an in-situ detection sensor; The locking assembly comprises a first part arranged on the pump head and a second part arranged on the pump machine, and is configured to rotate along with the pump head along the circumferential direction after the pump head is axially arranged in the pump machine, and the first part is matched with the second part so as to lock the position of the pump head relative to the pump machine along the axial direction and the circumferential direction; The pump head is arranged on the pump head, the on-site detection sensor is arranged on the pump head and used for acquiring on-site information of the pump head, and the pump head is configured to be prevented from being started or closed when the on-site information is not installed or installed in place. Optionally, the first part comprises a lock head arranged along the radial direction of the pump head, the second part comprises a trigger and a rotating shaft, the trigger is provided with a lock tongue, the trigger is rotatably arranged on the pump around the rotating shaft and is configured to be engaged with and separated from the lock head through rotating around the rotating shaft, and the circumferential position of the pump head relative to the pump is locked when the lock tongue is engaged with the lock head. Optionally, the second portion comprises a first potential energy portion for applying a potential energy force to the trigger towards a locking direction. Optionally, the lock head and the lock tongue are configured such that, when the pump rotates toward the locking position, the lock head drives the trigger to rotate toward the unlocking direction by pushing the lock tongue until the lock head passes over the lock tongue, the trigger rotates toward the locking direction, and the lock tongue is engaged with the lock head. Optionally, the pump machine includes around pivot circumference sets up keep off the ring, the trigger includes the cover locate epaxial bearing and encircle in keep off the platform outside the bearing, keep off the platform with keep off the ring along axial cooperation and be connected to allow circumference relative rotation, in order to seal the bearing with the pivot. Optionally, the trigger has an annular cavity between the stop and the bearing, the annular cavity being filled with a lubricating wax. Optionally, the first part comprises a rotation limiting block and a sliding block movably arranged along the axial direction of the pump head, the second part comprises a first blocking wall and a second blocking wall which are oppositely arranged along the circumferential direction of the pump, and when the rotation limiting block rotates along with the pump head to abut against the first blocking wall, the sliding block moves to a clamping position along the axial direction and abuts against the second blocking wall, so that the circumferential position of the pump head relative to the pump is locked. Optionally, the first portion includes a second potential energy portion for applying a potential energy force to the slider toward a locking direction. Optionally, the first portion comprises a first abutment sur