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CN-121987929-A - Urinary catheter

CN121987929ACN 121987929 ACN121987929 ACN 121987929ACN-121987929-A

Abstract

The application belongs to the technical field of medical instruments, and particularly relates to a catheter which comprises a catheter body, a balloon, a guide head, a guide wire, a control device and a positioning assembly, wherein the catheter body is provided with a first end and a second end which are oppositely arranged, the balloon is connected to the first end and can be expanded and deformed outwards, the guide head is arranged at one end of the balloon, which is far away from the catheter body, and is connected with the balloon, the guide wire penetrates through the catheter body and the balloon and is connected with the guide head, the control device is connected to the second end and is in transmission connection with the guide wire, the control device can act along the axial direction of the catheter body so as to drive the guide head to squeeze the balloon through the guide wire, and the positioning assembly is used for controlling locking and unlocking of the control device, wherein the balloon can be locked when being in an outwards expanded and deformed state or being extruded and kept in a compressed state by the guide head. Thus, not only the fixation stability and safety of the catheter during the retention period can be improved, but also the discomfort and pain of a patient during the taking-out of the catheter can be relieved.

Inventors

  • LI JIE
  • GU TENGFEI
  • PAN YONGTAO

Assignees

  • 丽水市中心医院
  • 浙江医高医疗科技有限公司

Dates

Publication Date
20260508
Application Date
20260306

Claims (10)

  1. 1. A urinary catheter, characterized in that the urinary catheter (100) comprises: A catheter body (10) having oppositely disposed first (11) and second (12) ends; A balloon (20) connected to the first end (11) and capable of expanding and deforming outwardly; The guide head (30) is arranged at one end of the balloon (20) far away from the catheter body (10) and is connected with the balloon (20); a guide wire (40) which penetrates through the catheter body (10) and the balloon (20) and is connected with the guide head (30); A control device (50) connected to the second end (12) and in driving connection with the guide wire (40), the control device (50) being capable of acting in the axial direction of the catheter body (10) to drive the guide head (30) to squeeze the balloon (20) through the guide wire (40); -a positioning assembly (60) for controlling the locking and unlocking of the control means (50); The positioning assembly (60) has a first locking state in which the balloon (20) is in an outwardly expanded deformed state and a second locking state in which the balloon (20) is in a compressed state pressed and held by the guide head (30).
  2. 2. The urinary catheter as claimed in claim 1, wherein the positioning assembly (60) comprises: A fixed tube body (61) sleeved on the outer side of the control device (50) and connected with the catheter body (10), wherein a first fixed part (611) and a second fixed part (612) are sequentially arranged on the inner wall of the fixed tube body (61) at intervals along the axial direction of the fixed tube body; A urine bag connecting pipe (62) which penetrates through the fixed pipe body (61) and is connected and communicated with the control device (50), wherein a positioning convex part (621) is arranged on the outer wall (13) of the urine bag connecting pipe (62); In the first locking state, the positioning convex part (621) is in butt joint limit with one end, far away from the catheter body (10), of the first fixing part (611) along the axial direction of the catheter body (10), and in the second locking state, the positioning convex part (621) is in butt joint limit with one end, far away from the catheter body, of the second fixing part (612) along the axial direction of the catheter body (10).
  3. 3. The urinary catheter according to claim 2, wherein the first fixing portion (611) is provided with a first positioning groove (6111), and the first positioning groove (6111) can be in clamping fit with the positioning convex portion (621), so that the positioning convex portion (621) is circumferentially limited to the first fixing portion (611); And/or, the second fixing part (612) is provided with a second positioning groove (6121), and the second positioning groove (6121) can be in clamping fit with the positioning convex part (621), so that the positioning convex part (621) is circumferentially limited to the second fixing part (612).
  4. 4. A catheter according to claim 2 or 3, wherein the number of said first fixing parts (611) and said positioning protrusions (621) is plural and arranged in a one-to-one correspondence, and wherein the plural positioning protrusions (621) are capable of being synchronously limited in abutment with the respective corresponding first fixing parts (611); And/or the number of the second fixing parts (612) and the number of the positioning convex parts (621) are multiple, the two are arranged in a one-to-one correspondence manner, and the multiple positioning convex parts (621) can synchronously abut against the corresponding second fixing parts (612) for limiting.
  5. 5. The urinary catheter according to claim 2, wherein the control means (50) is configured as a flexible tube, and the control means (50) is elastically deformable in the axial and circumferential direction of the urinary catheter body (10); Wherein the guide wire (40) is arranged through the control device (50) and is connected with the urine bag connecting pipe (62).
  6. 6. Catheter according to claim 1, characterized in that the outer wall (13) of the catheter body (10) is provided with a drainage groove (131) along its axial direction.
  7. 7. The urinary catheter according to claim 6, wherein the number of drainage grooves (131) is configured as a plurality, the plurality of drainage grooves (131) being sequentially arranged at intervals along the circumference of the urinary catheter body (10).
  8. 8. The urinary catheter according to claim 1, wherein the balloon (20) comprises a plurality of strips (21), the plurality of strips (21) being sequentially spaced apart along the circumference of the urinary catheter body (10); Wherein a plurality of the strips (21) can be synchronously expanded and deformed outwards; And/or, strip body (21) includes first body (212), connector (213) and second body (214), first body (212) one end is connected with catheter body (10) an organic whole, the one end of connector (213) is kept away from the one end of catheter body (10) with first body (212), second body (214) one end is connected with connector (213) and the other end is connected with guide head (30) an organic whole, when sacculus (20) is opened, the length direction of first body (212) is a with the axial contained angle of catheter body (10), 85 +.ltoreq.a +.ltoreq.100.
  9. 9. The urinary catheter according to claim 8, wherein the inner wall of each strip (21) is provided with a relief groove (211), and the strip (21) can be outwardly expanded and deformed by taking the relief groove (211) as a deformation starting position.
  10. 10. The catheter according to claim 8, wherein the guide head (30) is movable towards the first end (11) under the actuation of the guide wire (40) to actuate the collapsing of the plurality of strips (21); Wherein the radial dimension of the balloon (20) after being folded is smaller than the radial dimension of the balloon (20) after being expanded and deformed outwards.

Description

Urinary catheter Technical Field The application belongs to the technical field of medical instruments, and particularly relates to a catheter. Background The catheter is an interventional medical instrument commonly used in clinic and is mainly used for assisting a patient with bladder emptying difficulty caused by surgical trauma, organism aging or urinary system dysfunction to drain urine so as to maintain the normal physiological function of the urinary system. The urinary catheter inserted through the urethra is usually placed into the bladder of a patient through the urethra and can be divided into a disposable urinary catheter and an indwelling urinary catheter according to the use mode, wherein the disposable urinary catheter is mainly used for single bladder emptying operation, the urinary catheter can be taken out after drainage is completed, and the indwelling urinary catheter needs to be reserved in the body of the patient for a long time so as to meet the clinical requirement of continuous drainage. In the fixation technology of the indwelling catheter, the traditional scheme generally adopts an inflatable or water-filled balloon, the balloon is inflated by filling gas or normal saline into the balloon, and the inflated balloon is clamped against the bladder neck of the bladder to fix the catheter, but the fixation mode has the risks of failure in functions such as filling failure, sealing water leakage, balloon rupture and the like, the inflated balloon occupies a larger place, the surrounding tissues are easy to be pressed, and the probability of blockage of the urinary tract is increased, therefore, the related technology provides the catheter with the lotus-shaped balloon at the end part, and the balloon is used for outwards expanding and deforming to form a three-dimensional lotus-shaped structure to be clamped in the bladder neck, so that the defect of the traditional inflatable balloon is overcome. However, the improved catheter still adopts a stretchable corrugated tube structure to control the movement of the guide wire, and has obvious defects in actual use that on one hand, in the process of patient movement or nursing, the corrugated tube is extremely easy to generate unexpected deformation due to false collision, extrusion or improper operation, the deformation of the corrugated tube can be directly transmitted to the guide wire and cause false action of the guide wire, so that the lotus-shaped balloon is unexpectedly folded, the catheter is fixed to be invalid and even slipped, and the stability and the potential safety hazard exist, and on the other hand, the catheter is also often inconvenient and painful to a patient due to instable fixation of the corrugated tube or inconsistent action transmission in the process of taking out the catheter. Disclosure of Invention In view of the above, there is a need for a urinary catheter that solves the above-mentioned problems. In order to solve the technical problems, the application provides the following technical scheme: a urinary catheter, the urinary catheter comprising: A catheter body having oppositely disposed first and second ends; a balloon connected to the first end and capable of expanding and deforming outwardly; The guide head is arranged at one end of the balloon far away from the catheter body and is connected with the balloon; the guide wire penetrates through the catheter body and the saccule and is connected with the guide head; the control device is connected with the second end and is in transmission connection with the guide wire, and can act along the axial direction of the catheter body so as to drive the guide head to squeeze the balloon through the guide wire; The positioning component is used for controlling the locking and unlocking of the control device; The positioning assembly is provided with a first locking state and a second locking state, wherein the balloon is in an outward expansion deformation state in the first locking state, and is in a compression state pressed and kept by the guide head in the second locking state. It can be understood that the control devices in different states are locked by adopting the positioning assembly, the position of the guide head can be stabilized at the position where the balloon is opened to be in a lotus shape, so that the balloon can be stably maintained in an expanded or compressed state, and the misoperation of the guide wire and the accidental deformation of the balloon caused by the interference of external force such as false collision and extrusion of the control devices can be avoided, and the fixation stability and safety of the catheter during the retention period are improved. Meanwhile, the locking and unlocking of the positioning assembly to the control device can enable the switching and the maintaining of the balloon state to be more definite and controllable, so that the catheter can ensure stable process in the taking-out operation, and discomfort a