CN114470478A

CN114470478A - Intracavity treatment catheter

Info

Publication number: CN114470478A
Application number: CN202210229971.8A
Authority: CN
Inventors: 罗玲丽; 龙其财
Original assignee: Shanghai Yingte Weiluo Medical Technology Co ltd
Current assignee: Shanghai Yingte Weiluo Medical Technology Co ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-05-13
Anticipated expiration: 2042-03-09
Also published as: CN114470478B

Abstract

The invention provides an intracavity treatment catheter which comprises a catheter body and a control handle, wherein the catheter body and the control handle are connected, a treatment piece and a pressure detection assembly are arranged on the catheter body, the treatment piece is arranged at the end part of the catheter body, and the pressure detection assembly can slide along the extension direction of the catheter body; the pressure detection assembly comprises a pressure detection piece and a pressure detection moving piece which are connected, the pressure detection piece is close to one end of the treatment piece, the pressure detection moving piece is connected with the control handle, and the control handle can start or pause the sliding of the pressure detection moving piece. The invention can collect the actual pressure of the intracavity tissue to different positions of the catheter, takes the actual pressure value as the guide for perfusion and judging the treatment effect, shortens the learning curve of a doctor, and promotes the standardization and the standardization of treatment.

Description

Intracavity treatment catheter

Technical Field

The invention relates to the field of medical instruments, in particular to an intracavity treatment catheter.

Background

In many cases, it is necessary to fill the surrounding tissues of the human body with a liquid medicine during the intraluminal treatment to protect the surrounding tissues or to make the luminal tissues adhere to the therapeutic device. Such as those using radio frequency and laser interventional catheters, may require medical fluid infusion. One typical application is that in the process of performing varicose vein thermosetting treatment on lower limbs by using a radio frequency host and a catheter (hereinafter referred to as a varicose vein radio frequency treatment system), anesthetic swelling liquid needs to be injected into the peripheral tissues of the veins of the lower limbs. On the one hand, under the oppression of anesthesia swelling liquid for the pathological change vascular wall pastes tight radio frequency pipe, and intraductal blood is gone up side by side, ensures thermal high-efficient transmission, thereby guarantees the validity of treatment. Meanwhile, the anesthetic swelling solution can isolate the treatment part from the surrounding normal tissues, and plays a role in protecting the normal tissues. Moreover, the anesthetic swelling liquid can also play a role in anesthesia and improve the feeling of a patient.

At present, the varicose vein radio frequency treatment system does not detect the pressure of a blood vessel on a radio frequency catheter, and a medicine perfusion system does not detect the pressure of a puncture outfit in a body. Thus, the dosage and the speed of drug infusion are most often controlled by the experience of the operator. Then, problems of too fast a rate, too much or too little a dose may occur, especially for those who have just come into contact with the relevant art.

Disclosure of Invention

In order to solve the above problems, the present invention discloses a novel intracavity therapeutic catheter, which has a movable pressure detection device for detecting the pressure of the cavity tissue wall to the therapeutic catheter and feeding back the pressure to the extracorporeal therapeutic apparatus as a reference of the perfusion effect to guide the drug perfusion. Meanwhile, the pressure parameter can also be used as an immediate evaluation reference of the treatment effect.

The invention provides an intracavity treatment catheter, which comprises a catheter body and a control handle which are connected, wherein a treatment piece and a pressure detection assembly are arranged on the catheter body, the treatment piece is arranged at the end part of the catheter body, and the pressure detection assembly can slide along the extension direction of the catheter body; the pressure detection assembly comprises a pressure detection piece and a pressure detection moving piece which are connected, the pressure detection piece is close to one end of the treatment piece, the pressure detection moving piece is connected with the control handle, and the control handle can start or pause the sliding of the pressure detection moving piece.

As described above, an intraluminal treatment catheter of the present invention has the following advantageous effects:

at present, the dosage, the speed and the pressure value to be achieved for perfusion are grasped by depending on the experience of the operator, and then the problems of too high speed, too much or too little dosage or insufficient pressure value at the treatment section of the catheter can occur. To achieve a well-known and accurate perfusion treatment, the physician needs a long time to learn, and the standardization and standardization of the treatment are difficult to achieve. The invention can collect the actual pressure of the tissue in the cavity to different positions of the catheter, takes the actual pressure value as the guide for perfusion and judging the treatment effect, is beneficial to solving the problems, shortens the learning curve of a doctor and promotes the standardization of treatment.

Drawings

FIG. 1 is a block diagram of an intraluminal treatment catheter in accordance with one embodiment of the present invention.

Fig. 2 is a view showing an end structure of a tube body of an intraluminal treatment catheter according to an embodiment of the present invention.

Figure 3 shows a block diagram of the tube of the intraluminal treatment catheter of one embodiment of the present invention (a partial length of the tube is not fully shown).

Fig. 4 shows a block diagram of a control handle of an intraluminal treatment catheter (without a cover) in accordance with one embodiment of the present invention.

Fig. 5 shows a top view of a control handle of an intraluminal treatment catheter (without a cover) in accordance with an embodiment of the present invention.

Figure 6a shows an enlarged view of a portion of the connection between the body and the control handle of an intraluminal treatment catheter in accordance with an embodiment of the present invention.

Figure 6b shows a further enlarged view of the junction of the body and the control handle of an intraluminal treatment catheter in accordance with an embodiment of the present invention.

Figure 6c shows a partial cross-sectional view of the connection of the body and control handle of an intraluminal treatment catheter in accordance with one embodiment of the present invention.

Fig. 7a shows an operational view (clamped state) of the locking mechanism of the intraluminal treatment catheter in accordance with one embodiment of the present invention.

Fig. 7b shows an operational view of the locking mechanism of the intraluminal treatment catheter in accordance with one embodiment of the present invention (relaxed state).

Fig. 8a shows a partially enlarged working view (clamped state) of the locking mechanism of the intraluminal treatment catheter in accordance with one embodiment of the present invention.

Fig. 8b shows a partially enlarged working view (relaxed state) of the locking mechanism of the intraluminal treatment catheter in accordance with one embodiment of the present invention.

Fig. 9 shows a partially enlarged operation view (relaxed state) of the locking mechanism of the intraluminal treatment catheter in accordance with another embodiment of the present invention.

Fig. 10a shows a partially enlarged working view (clamped state) of the locking mechanism of the intraluminal treatment catheter according to another embodiment of the present invention.

Fig. 10b shows a partially enlarged working view (relaxed state) of the locking mechanism of the intraluminal treatment catheter in accordance with another embodiment of the present invention.

Fig. 11 is a partially enlarged view showing the locking mechanism of the intraluminal treatment catheter according to another embodiment of the present invention (clamped state).

Fig. 12 is a diagram showing the movement of the pressure sensing assembly of the intraluminal treatment catheter in accordance with one embodiment of the present invention (with the pressure sensing member at the end of the catheter body).

FIG. 13 is a diagram showing the movement of the pressure sensing assembly of the intracavity treatment catheter in accordance with an embodiment of the present invention (with the pressure sensing member positioned in the middle of the body).

FIG. 14 is a diagram showing the movement of the pressure sensing assembly of the intracavity treatment catheter in accordance with an embodiment of the present invention (with the pressure sensing member at the rear of the body).

Description of the element reference numerals

10 pipe body

11 treatment element

12 pressure detection subassembly

13 pressure detecting piece

14 pressure detecting moving part

141 pressure detecting piece connecting piece

142 pressure detection piece connecting shaft

143 pressure detector guide block

15 conduit head

20 control handle

21 pressure detection subassembly connecting piece

211 pressure detecting member guide groove

22 locking mechanism

221 locking block

2211 extrusion area

222 locking guide bar

223 locking operation lever

2231 locking contact block

224 resilient member

23 magnetic control switch

3 Cable

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 14. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

As shown in fig. 1, an intraluminal treatment catheter according to an embodiment of the present invention includes a tubular body 10 and a control handle 20, wherein a treatment member 11 and a pressure detection assembly 12 are disposed on the tubular body 10, the treatment member 11 is disposed at an end of the tubular body 10, and the pressure detection assembly 12 can slide along an extending direction of the tubular body 10; the pressure detection assembly 12 comprises a pressure detection part 13 and a pressure detection moving part 14 which are connected, the pressure detection part 13 is close to one end of the treatment part 11, the pressure detection moving part 14 is connected with the control handle 20, and the control handle 20 can start or pause the sliding of the pressure detection moving part 14.

The speed and the dosage of the liquid medicine perfusion are intelligent, so that the larger errors of the perfusion speed and the dosage caused by the insufficient experience of an operator are avoided, and the standardization of the liquid medicine perfusion in the intracavity clinical operation process is promoted. Pressure measurement can follow axial displacement, can detect a plurality of positions at the in-process that fills, and the grasp that can be better fills the effect. Meanwhile, the pressure parameter can also be used as an immediate evaluation reference of the treatment effect.

The treatment piece 11 can be a radio frequency electrode or a coil, and radio frequency current generates heat after passing through the treatment piece, so that the effect of thermal coagulation treatment is achieved.

In one embodiment, as shown in FIG. 2, one end of the tube body is a catheter hub 15. The surface of the catheter head is a curved surface, so that an acting object is prevented from being scratched in the puncture process or in the cavity. The catheter head also plays a role in limiting the treatment piece.

In one embodiment, as shown in fig. 3, the pressure detection moving member 14 includes a pressure detection member connecting member 141, a pressure detection member connecting shaft 142, and a pressure detection member guide block 143, which are connected in sequence; the pressure detection part connecting part 141 is connected with the pressure detection part, and the pressure detection part guide block 143 is connected with the control handle 20.

In one embodiment, the direction of extension of the pressure sensing ram 14 is the same as the direction of extension of the tubular body 10.

In one embodiment, the pressure detection piece 13, the pressure detection piece connection member 141, the pressure detection piece connection shaft 142, and the pressure detection piece guide block 143 are rigidly connected.

Further, a magnetic member is disposed in the pressure detection member connection member 141. The magnetic part can be controlled by an external magnetic device, so that the pressure detection assembly is guided and controlled to slide along the extending direction of the pipe body in a non-contact mode.

Optionally, the magnetic member is a permanent magnet or an electromagnet. As shown in fig. 4 or 5, when the magnetic member is an electromagnet, a magnetic control switch 23 is further disposed in the control handle, and the magnetic control switch 23 is electrically connected to the magnetic member. It is possible to control whether or not the magnetic member is excited to have magnetism.

In one embodiment, as shown in fig. 4, 6a, 6b and 6c, a pressure detection assembly connecting part 21 is arranged in the control handle 20, a pressure detection guide groove 211 is arranged on the pressure detection assembly connecting part 21, and the pressure detection guide block 143 can slide in the pressure detection guide groove 211.

In one embodiment, as shown in fig. 7a to 11, a locking mechanism 22 is further provided on the control handle 20, and the locking mechanism 22 can start or pause the sliding of the pressure detection member guide block 143.

Preferably, the groove wall of the pressure detector guide groove 211 is made of an elastic material, and the locking mechanism 22 can press the outer wall of the pressure detector guide groove 211 to start or stop the sliding of the pressure detector guide block 143.

In one embodiment, as shown in fig. 7a to 11, the locking mechanism 22 includes a locking block 221, a locking guide rod 222 and a locking operation rod 223, the locking block 221 is slidably connected to the locking guide rod 222, the locking operation rod 223 can start or pause the movement of the locking block 221, a pressing area 2211 is arranged on the locking block 221, and the pressing area 2211 is in contact with the outer wall of the pressure detection piece guide groove 211; for pressing the pressure detecting member guide groove 211.

The pressing area 2211 is movable in a direction perpendicular to the extending direction of the pressure detecting member guide groove 211

In one embodiment, as shown in fig. 7a to 11, the locking guide bar 222 and/or the locking operation bar 223 are provided with an elastic member 224. The elastic member 224 is used to provide a pre-load force to the latch, so as to prevent the latch from moving too severely due to the movement of the latch operating lever, and thus the control of the pressure detecting member guide block 143 is lost due to too large displacement.

In one embodiment, the length of the pressing zone is the same as the length and extension direction of the guide groove. So that it can be locked regardless of the movement of the pressure-detecting guide block to any position.

In one embodiment, as shown in fig. 7a, 7b, 8a, 8b and 9, the locking lever is fixedly connected to the locking block or is integrally formed with the locking block. The locking operating rod is connected with the shell of the control handle through threads, and one end of the locking operating rod extends out of the shell of the control handle 20. When the locking operating rod is rotated by the outside, the locking operating rod moves along the extending direction of the locking guide rod, and then the locking operating rod drives the guide block to move along the extending direction of the locking guide rod, so that the extrusion area of the guide block lifts or extrudes the pressure detection piece guide groove 221.

As shown in fig. 7a and 7b, fig. 12, fig. 13 and fig. 14, when the locking lever is at an angle, the pressing area 2211 of the locking block is far away from the pressure detection piece guide groove 221, and is in a relaxed state, at which time the movement of the link is controlled by the external magnetic member, and the locking lever is rotated after moving to a target position, so that the pressing area of the locking block is close to the guide groove 221 to press the guide block, thereby locking the position of the pressure detection assembly.

In one embodiment, as shown in fig. 10a or 10b, 12, 13, and 14, a lock contact block 2231 is provided at one end of the lock lever 223, and the lock contact block 2231 is in contact with the lock block 221 and is slidable with respect to the lock block 221.

Optionally, the vertical height of the contact surface of the locking contact block and the locking block is variable. As shown in fig. 10a and 10b, for example, the locking contact 2231 is wedge-shaped. When the low side of locking contact piece wedge structure contacts with the locking piece, pressure measurement spare guide way 221 is kept away from to locking mechanism, is in the relaxed state, can pass through outside magnetic component control connecting piece motion this moment, promotes the operating handle of action bars behind the removal target position for the high side of locking contact piece wedge structure contacts with the locking piece, makes the extrusion district of locking piece be close to guide way 221 and thus compresses tightly the guide block, thereby locks the position of pressure measurement subassembly.

In one embodiment, as shown in fig. 11, 12, 13 and 14, the locking operating lever is an electric thruster, the guide lever is provided with a spring, and the locking block is pushed to enable a propelling rod of the electric thruster to be always in contact with the locking block. When the pushing rod of the electric thruster is at the retraction position, the locking mechanism is far away from the guide groove 221 of the pressure detection part and is in a release state, the connecting piece can be controlled to move through the external magnetic part, the electric thruster is electrified after being moved to a target position, the extrusion area of the locking block is close to the guide groove 221, and therefore the guide block is pressed tightly, and the position of the pressure detection assembly is locked.

In one embodiment, as shown in fig. 7 a-11, the pressure sensing assembly 12 and/or the pressure sensing assembly connector 21 are at least partially structurally nested within the sidewall of the tubular body.

In one embodiment, the pressure detection member and the pressure detection connection member are annular. The side wall of the pipe body is nested.

Alternatively, the number of the pressure detecting member connecting shafts 142 and the pressure detecting member guide blocks 143 is 1 or more.

In one embodiment, the pressure sensing assembly attachment 21 is a transparent material. The position of the pressure detection piece guide block is conveniently observed, and therefore the position of the pressure detection piece is obtained through calculation.

In one embodiment, the pressure detecting assembly 12 is further provided with a position detecting element of the pressure detecting element. For detecting the position of the pressure detecting member. In a further variation, a detection device is mounted at a position of a window corresponding to the pressure detection piece guide block, and the detected position is transmitted to corresponding treatment equipment.

Optionally, the pressure detection piece guide block uses a conductive body or is coated with a conductive material on the outer surface, and a conductive part is laid on the surface of the guide groove or is coated with a conductive material, so that the position of the pressure detection piece of the internal catheter is determined according to the loop impedance.

In one embodiment, a detection device (e.g., a pressure detector) is mounted on the force transmission path of the latch to detect the magnitude of the latching force and determine the state of the latch mechanism.

The pressure detection member of the present invention may be a force sensor. The force sensor may be of the prior art and may be, for example, a HBM C11 series miniature force sensor.

And the pressure detection piece, the magnetic control switch and other electronic pieces are connected with the outside through the cable 3.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The intracavity treatment catheter is characterized by comprising a catheter body (10) and a control handle (20) which are connected, wherein a treatment piece (11) and a pressure detection assembly (12) are arranged on the catheter body (10), the treatment piece (11) is arranged at the end part of the catheter body (10), and the pressure detection assembly (12) can slide along the extension direction of the catheter body (10); the pressure detection assembly (12) comprises a pressure detection part (13) and a pressure detection moving part (14) which are connected, the pressure detection part (13) is close to one end of the treatment part (11), the pressure detection moving part (14) is connected with the control handle (20), and the control handle (20) can start or pause the sliding of the pressure detection moving part (14).

2. The intracavity treatment catheter of claim 1 wherein said pressure-detecting moving member (14) includes a pressure-detecting member connecting member (141), a pressure-detecting member connecting shaft (142) and a pressure-detecting member guide block (143) which are connected in this order; the pressure detection piece connecting piece (141) is connected with the pressure detection piece, and the pressure detection piece guide block (143) is connected with the control handle (20).

3. The intracavity treatment catheter of claim 2 wherein said pressure sensing element attachment element (141) is provided with a magnetic element therein.

4. The intracavity treatment catheter of claim 2 wherein said control handle (20) has a pressure sensing module attachment member (21) disposed therein, said pressure sensing module attachment member (21) having a pressure sensing member guide slot (211) disposed therein, said pressure sensing member guide block (143) being slidable within said pressure sensing member guide slot (211).

5. The intracavity treatment catheter of claim 4 wherein said control handle (20) is further provided with a locking mechanism (22), said locking mechanism (22) being capable of initiating or halting sliding of said pressure sensing member guide block (143).

6. The intracavity treatment catheter of claim 5 wherein a wall of said pressure sensor guide groove (211) is made of an elastic material, said locking mechanism (22) being capable of pressing against an outer wall of said pressure sensor guide groove (211) to thereby open or pause the sliding of said pressure sensor guide block (143).

7. The intracavity treatment catheter of claim 6 wherein said locking mechanism (22) comprises a locking block (221), a locking guide rod (222) and a locking operating rod (223), said locking block (221) is slidably connected with said locking guide rod (222), said locking operating rod (223) can start or pause the movement of said locking block (221), said locking block (221) is provided with a pressing region (2211), said pressing region (2211) is contacted with the outer wall of said pressure detection member guide groove (211); for pressing the pressure detecting member guide groove (211).

8. The intracavity treatment catheter of claim 7 wherein said locking guide rod (222) and/or said locking lever (223) is provided with a resilient member (224).

9. The endoluminal therapeutic catheter according to claim 1, wherein the pressure sensing assembly (12) and/or the pressure sensing assembly connector (21) is at least partially structurally nested to a sidewall of the tubular body.

10. The intracavity treatment catheter of claim 2 wherein said pressure sensing module (12) is further provided with a pressure sensing element position sensing element.