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CN-114681016-B - Volume reduction catheter testing system and testing method

CN114681016BCN 114681016 BCN114681016 BCN 114681016BCN-114681016-B

Abstract

The invention discloses a volume-reducing guide pipe testing system and a testing method, wherein the volume-reducing guide pipe testing system comprises a transmission shaft, the volume-reducing guide pipe testing system comprises a main body, a power source and a transmission assembly connected with the power source are arranged on the main body, and the volume-reducing guide pipe testing system is characterized in that an installation seat for detachably installing a volume-reducing guide pipe to be tested is also arranged on the main body, and the installation seat is connected with the power source through the transmission assembly, so that the power source can drive the installation seat and the transmission shaft arranged on the installation seat to rotate. The volume-reducing catheter test system and the corresponding test method provided by the invention not only can simulate actual working conditions and monitor the operation of the volume-reducing catheter in real time, but also can quickly replace a piece to be tested, and can replace different volume-reducing catheters under the same working conditions, so that the required volume-reducing catheter can be quickly confirmed and selected, and the problem that the operation fails or the patient is damaged due to instability caused by the fact that the volume-reducing catheter is not suitable for the excessive torque requirement in the operation process is avoided.

Inventors

  • WU XINGYU
  • LIU QUANZU
  • LONG HAN

Assignees

  • 先健科技(深圳)有限公司

Dates

Publication Date
20260512
Application Date
20201231

Claims (7)

  1. 1. The volume-reducing guide pipe testing system is used for carrying out torque testing on a volume-reducing guide pipe to be tested, the volume-reducing guide pipe to be tested comprises a transmission shaft, the volume-reducing guide pipe testing system comprises a main body, a power source and a transmission assembly connected with the power source are arranged on the main body, and the volume-reducing guide pipe testing system is characterized in that an installation seat and a separation seat are arranged on the main body; the mounting seat is connected with the power source through the transmission assembly so that the power source can drive the mounting seat and the transmission shaft arranged on the mounting seat to rotate, wherein the power source is connected with an encoder with a control function, and the encoder is distributed to preset voltage and current of the transmission assembly so as to control the rotating speed of the transmission assembly; The mounting seat comprises a sleeve, a lantern ring and a clamping assembly, the lantern ring and the clamping assembly are sequentially contained in the sleeve from the far end to the near end, the mounting seat further comprises a channel penetrating through the sleeve, the lantern ring and the near end of the clamping assembly along the length direction of the sleeve, and the channel is used for placing the transmission shaft; the proximal end of the lantern ring comprises a conical cavity with an opening, and the distal end of the clamping assembly is movably accommodated in the conical cavity; the separating seat comprises a first channel, a second channel, a containing cavity and a discharge channel; the transmission shaft of the volume-reducing guide tube to be measured sequentially passes through the first channel, the second channel and the channel of the mounting seat, and is detachably mounted on the mounting seat.
  2. 2. The reduced volume conduit testing system of claim 1, wherein the clamping assembly comprises a clamp and a connector, the clamp being located between the collar and the connector, the connector having an outer wall in sealing connection with an inner wall of the sleeve.
  3. 3. The system of claim 1, wherein the distal end of the clip assembly includes a plurality of circumferentially distributed spring structures, wherein free end portions of the plurality of spring structures or inner surfaces of the spring structures form protrusions toward a longitudinal central axis of the clip assembly, and wherein the protrusions form a circular ring around each other having an inner diameter smaller than a diameter of the channel.
  4. 4. The reduced volume conduit testing system of claim 1, wherein an inner wall of the collar projects toward a longitudinal central axis of the collar.
  5. 5. The reduced volume catheter test system according to claim 2, wherein a distal surface of the connector abuts a proximal surface of the clip, the relative position of the connector and the sleeve being axially adjustable.
  6. 6. The reduced volume delivery conduit testing system according to claim 5, wherein the connector is partially snapped into the sleeve and the proximal end face of the connector is closed and the outer sidewall is sealed to the inner wall of the sleeve.
  7. 7. A method of testing a volume reducing catheter comprising the volume reducing catheter testing system of any one of claims 2, 5,6, comprising the steps of: S1, loosening the connecting piece to enable the connecting piece to move towards the proximal end by a proper distance or removing the connecting piece; S2, enabling a transmission shaft of the volume-reducing catheter to be tested to sequentially pass through the distal end of the sleeve, the lantern ring and the clamping piece along the channel; s3, installing the connecting piece or adjusting the connecting piece to enable the connecting piece to move towards the distal end for a proper distance, and clamping the volume-reducing guide tube to be tested; s4, increasing the load of the volume-reducing guide tube to be detected, simulating actual working conditions, and detecting real-time data; S5, after the test is finished, loosening the connecting piece to enable the connecting piece to move a proper distance towards the proximal end or taking down the connecting piece, and after the test is finished, executing a step S6, wherein the to-be-tested piece needs to be replaced, and executing a step S7; s6, taking down the volume-reducing guide tube to be measured, and ending; S7, replacing the volume-reducing guide tube to be tested, and executing the step S1.

Description

Volume reduction catheter testing system and testing method Technical Field The invention relates to the technical field of medical equipment, in particular to a volume-reducing catheter testing system and a volume-reducing catheter testing method. Background Arterial occlusive disease (arteriosclerosis obliterans, ASO) of lower limb is a common and frequently occurring disease of middle-aged and elderly people, and is also an important manifestation of atherosclerosis in lower limb. The current treatment methods for the arteriosclerosis obliterans of the lower limbs mainly comprise drug treatment, surgical operation, intracavity treatment, compound operation, autologous peripheral blood stem cell transplantation, gene drug treatment and the like. The intracavity treatment of the lower limb arteriosclerosis obliterans has the advantages of minimally invasive, safe, effective, quick recovery and the like, and has become the first choice for the treatment of the lower limb arteriosclerosis obliterans. Current methods of endoluminal treatment include conventional percutaneous transluminal angioplasty (percutaneous transluminal angioplasty, PTA) and emerging endoluminal volume reduction. Pure PTA has obvious limitation, because the pure PTA performs the expansion treatment on the narrow section, the redundant tissue cannot be removed, the stretching of the blood vessel wall cannot be avoided, the air pressure injury and interlayer are easy to generate, and the restenosis state is easy to rebound after the operation. PTA is often used in combination with an endovascular volume reduction procedure, wherein plaque is resected by an intracavitary mechanical atherectomy procedure in the endovascular volume reduction procedure, and good therapeutic effect can be achieved by matching with PTA. However, not any volume-reducing catheter can effectively remove any plaque, when the volume-reducing catheter is used for removing the plaque through rotary cutting, the torque of the transmission shaft of the volume-reducing catheter is related to the resistance, the rotating speed and the diameter of the transmission shaft provided by the plaque, when the torque is too large, the transmission shaft is easy to shake, the cutter head is driven to shake, the normal removal of the plaque is further affected, and even normal blood vessels are damaged due to shaking. Therefore, after confirming plaque size and position before surgery, proper volume-reducing catheters should be tested and confirmed, and when testing volume-reducing catheters, most of the prior art is to test mechanical properties of volume-reducing catheters, such as bending capability and torsion resistance, instead of actually testing volume-reducing catheters in real time, the prior art cannot confirm whether the current catheters are suitable for the current working conditions, and in addition, the prior art does not relate to the problem that different volume-reducing catheters need to be selected according to different conditions, and the prior art cannot confirm the needed volume-reducing catheters from a plurality of volume-reducing catheters, so that a volume-reducing catheter testing system is needed, and can replace different volume-reducing catheters under the same working condition, and then confirm and select the needed volume-reducing catheters, so as to solve the problems that the volume-reducing catheters are unstable in working and then fail in surgery or damage to patients due to the fact that the volume-reducing catheters are not suitable for excessive torque requirements in the surgical process. Disclosure of Invention Therefore, the invention provides a system and a method for testing a volume-reducing catheter, which are used for solving the problems that the volume-reducing catheter works unstably, and then the operation fails or the patient is damaged because the volume-reducing catheter is not suitable for the excessive torque requirement in the operation process. The technical scheme adopted by the invention is as follows: The utility model provides a volume reduction pipe test system for to await measuring volume reduction pipe tests, volume reduction pipe to await measuring includes the transmission shaft, volume reduction pipe test system includes the main part, be equipped with the power supply in the main part and with the drive assembly that the power supply links to each other, still be equipped with in the main part and be used for demountable installation the mount pad of volume reduction pipe to await measuring, the mount pad passes through drive assembly with the power supply links to each other, so that the power supply can drive the mount pad and install in drive shaft on the mount pad rotates. In one embodiment, the mounting seat comprises a sleeve, a collar and a clamping assembly, the collar and the clamping assembly are sequentially contained in the sleeve from the far end to the near end, the mounting seat further compris