CN211245076U

CN211245076U - Pressure positioning conduit assembly

Info

Publication number: CN211245076U
Application number: CN201921053660.0U
Authority: CN
Inventors: 孙英贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-08-14
Anticipated expiration: 2029-07-08

Abstract

The utility model belongs to the technical field of medical instrument and specifically relates to a pressure location pipe subassembly, including pipe, optic fibre pressure sensor and outer tube, optic fibre pressure sensor locates the pipe front end, and the pipe rear end links firmly with the outer tube one side is equipped with the branch pipe, be equipped with first wire chamber in the pipe, the outer tube head end is equipped with the second wire chamber, be equipped with the third wire chamber in the branch pipe, just first wire chamber, second wire chamber, third wire chamber communicate in proper order, the little wire of optic fibre pressure sensor rear side passes in proper order first wire chamber, second wire chamber and third wire chamber the branch pipe end is equipped with the joint, just little wire terminal with the joint links to each other. The utility model discloses utilize optic fibre pressure sensor real-time detection heart low tube in-process pipe head end's pressure value, and then the pressure variation assistance-localization real-time pipe position through the pipe head end, the location is accurate.

Description

Pressure positioning conduit assembly

Technical Field

The utility model belongs to the technical field of medical instrument and specifically relates to a pressure location tubing assembly.

Background

In the medical field, many diseases require catheter-assisted therapy, such as tumor chemotherapy, and a catheter is generally selected to be inserted into a superior vena cava close to an atrium for drug delivery, which has little side effect, wherein the catheter is generally inserted into a superficial vein-a deep vein-the superior vena cava close to the atrium, and for cardiac temporary pacing, the catheter is inserted into a ventricle, and the electrode at the head end of the catheter is electrified to realize cardiac temporary pacing, and the catheter is inserted into the deep vein-the atrium-the ventricle. When a catheter is placed, a doctor needs to know the position of the catheter, but at present, the catheter auxiliary positioning can be realized only by adopting X rays, ultrasonic waves and the like, so that not only is the operation troublesome, but also the X rays and the like can influence the human body, and in addition, the temporary cardiac pacing and the like can also judge whether the catheter is in place according to the experience of the doctor, but the requirements on the clinical experience and the technical level of the doctor are extremely high.

Along with the development of science and technology, the optical fiber pressure sensor comes into operation, compared with the traditional electromechanical pressure sensor, the optical fiber pressure sensor has the advantages of good stability, high sensitivity, strong anti-electromagnetic interference capability and the like, and is gradually applied to the medical field, in addition, compared with the traditional electromechanical pressure sensor, the volume of the optical fiber pressure sensor is greatly reduced, for example, in the Chinese utility model patent with the authorization publication number of CN206876317U and the name of 'a full-fiber high-sensitivity pressure sensor', the outer diameter of the cladding of the head end of the disclosed optical fiber pressure sensor is only 300 mu m-420 mu m, the core diameter of the second single mode optical fiber connected with the phase demodulator at the rear side is 9 mu m, the outer diameter of the cladding is 125 mu m or 140 mu m, the second single mode optical fiber is mainly connected with the pressure detection system and can be generally called as a micro-conductor, and the pressure detection system generally comprises a data processing unit (comprising a phase demodulator, a micro, Computer etc.), display screen etc. components, the pressure that optical fiber pressure sensor detected is transmitted to data processing unit through the little wire and after the processing, and its testing result can show on the display screen directly perceivedly, generally can show pressure value and pressure waveform, and in the in-process of pipe down to the heart, the pressure value and the pressure waveform change of vein, atrium and ventricle are very obvious, if can apply optical fiber pressure sensor in above-mentioned pipe, can assist the doctor to fix a position the pipe position better undoubtedly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure location tubing assembly utilizes the pressure value of optic fibre pressure sensor real-time detection low tube in-process pipe head end, and then the pressure variation assistance-localization real-time pipe position through the pipe head end, and the location is accurate.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a pressure location catheter subassembly, includes pipe, optic fibre pressure sensor and outer tube, and optic fibre pressure sensor locates the pipe head end, and the pipe rear end links firmly with the outer tube one side is equipped with the branch pipe be equipped with first wire chamber in the pipe be equipped with second wire chamber in the outer tube be equipped with third wire chamber in the branch pipe, just first wire chamber, second wire chamber, third wire chamber communicate in proper order, the little wire of optic fibre pressure sensor rear side passes in proper order first wire chamber, second wire chamber and third wire chamber the branch pipe end is equipped with the joint, just little wire terminal with the joint links to each other.

The head end of the outer pipe is sleeved at the rear end of the catheter, and the outer side of the head end of the outer pipe is provided with a strain release pipe.

The catheter is internally provided with a first overflowing cavity, the outer tube is internally provided with a second overflowing cavity, and the first overflowing cavity is communicated with the second overflowing cavity.

The first overflowing cavity and the second overflowing cavity are eccentrically arranged.

The outer tube is internally provided with a connecting wire cavity, and the first wire cavity in the guide tube is communicated with the second wire cavity and the connecting wire cavity in the outer tube.

The guide pipe and the outer pipe are both solid structures.

And the rear end of the outer pipe is provided with a pipe joint.

The utility model discloses an advantage does with positive effect:

1. the utility model discloses utilize optic fibre pressure sensor real-time detection heart low tube in-process pipe head end's pressure value, and then the pressure variation assistance-localization real-time pipe position through the pipe head end, the location is accurate.

2. The utility model discloses a pipe rear end links firmly with an outer tube one side is equipped with the branch pipe that has the joint, will during the use the joint passes through interconnecting link and data processing unit connection and can realize that optic fibre pressure sensor links to each other with pressure measurement system, and convenience simple to use to can also effectively protect little wire, avoid little wire to expose unexpected circumstances such as emergence rupture.

3. The utility model discloses utilize optical pressure sensor to detect pipe head end pressure, can not exert an influence to the human body.

Drawings

Figure 1 is a schematic structural view of an embodiment of the present invention,

figure 2 is a view a-a of figure 1,

figure 3 is an enlarged view at B in figure 1,

figure 4 is a schematic structural view of another embodiment of the present invention,

figure 5 is an enlarged view at C of figure 4,

figure 6 is a schematic structural view of another embodiment of the present invention,

fig. 7 is a schematic view of the usage state of the present invention.

Wherein, 1 is the pipe, 101 is first wire chamber, 102 is first excessive flow chamber, 2 is optic fibre pressure sensor, 201 is little wire, 3 is the outer tube, 301 is the second wire chamber, 302 is the second excessive flow chamber, 303 is the connecting wire chamber, 4 is the branch pipe, 401 is the third wire chamber, 5 is the joint, 6 is the strain relief pipe, 7 is the interconnecting link, 8 is the data processing unit, 9 is the display screen, 10 is the pacing electrode, 11 is the electrode wire.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-7, the utility model discloses a pipe 1, optic fibre pressure sensor 2 and outer tube 3, optic fibre pressure sensor 2 locate the 1 head end of pipe, and pipe 1 rear end links firmly with outer tube 3 one side is equipped with branch pipe 4 be equipped with first wire chamber 101 in the pipe 1 this internal second wire chamber 301 that is equipped with of outer tube 3 be equipped with third wire chamber 401 in the branch pipe 4, first wire chamber 101, second wire chamber 301, third wire chamber 401 communicate in proper order, just little wire 201 of optic fibre pressure sensor 2 rear side passes in proper order first wire chamber 101, second wire chamber 301 and third wire chamber 401 branch pipe 4 end is equipped with joint 5, just little wire 201 terminal with joint 5 links to each other.

When the utility model is used, the catheter 1 is put into the human body, and the outer tube 3 is always positioned outside the human body. As shown in fig. 3, the conduit 1 rear end is located to 3 head pot heads of outer tube 3 the outer side of 3 head ends of outer tube is equipped with the release pipe 6 that meets an emergency, the release pipe 6 that meets an emergency is used for avoiding stress concentration, in order to improve the utility model discloses a life. The strain relief tube 6 is well known in the art.

As shown in fig. 7, in the use of the present invention, the connector 5 is connected to the data processing unit 8 through the connection circuit 7, the data processing unit 8 is connected to the display screen 9 through the circuit, and the data processing unit 8 and the display screen 9 are both known in the art and are commercially available products. The connector 5 may adopt a structure convenient for plugging, such as a USB structure, and the connector 5 is well known in the art and is a commercially available product.

The catheter 1 and the outer tube 3 can be made of nylon, polyethylene, polypropylene or segmented polyamide by pressure heating blow molding or injection molding, the production process is well known in the art, and a pipe joint for connection is arranged at the rear end of the outer tube 3.

The utility model discloses it is different according to treatment scheme, can be equipped with the overflowing chamber in pipe 1 and the outer tube 3, perhaps be equipped with connecting wire chamber 303 in the outer tube 3, perhaps pipe 1 and outer tube 3 are solid construction.

Example 1

As shown in fig. 1 to 3, in this embodiment, a through first overflowing cavity 102 is further provided in the catheter 1 in addition to the first guide wire cavity 101, a through second overflowing cavity 302 is further provided in the outer tube 3 in addition to the second guide wire cavity 301, the first overflowing cavity 102 is communicated with the second overflowing cavity 302, the first overflowing cavity 102 and the second overflowing cavity 302 can achieve the effects of drug infusion or drainage, and a pipe joint connected with a drug infusion device or a drainage device is provided at the rear end of the outer tube 3, the pipe joint being known in the art and being a commercially available product.

As shown in fig. 2, the first overflowing cavity 102 and the second overflowing cavity 302 are eccentrically arranged, so that the first guide wire cavity 101 and the second guide wire cavity 301 are arranged on one side of the catheter 1 and one side of the outer tube 3 with enough thickness.

In this embodiment, the outer diameter of the optical fiber pressure sensor 2 is 300 μm, the outer diameter of the micro-wire 201 is 125 μm, and the catheter 1 is a 6F grade medical catheter.

The working principle of the embodiment is illustrated by taking tumor chemotherapy as an example:

firstly, the joint 5 of the branch pipe 4 is connected with the data processing unit 8 through the connecting line 7, so that the connection between the optical fiber pressure sensor 2 and the pressure detection system is realized, and then the medical staff starts the pipe laying operation. The tumor chemotherapy injection lower tube path is a superficial vein-a deep vein-a superior vena cava close to an atrium, the position of a junction of the atrium and the superior vena cava is mainly found during tube lowering, in the tube lowering process, the optical fiber pressure sensor 2 detects pressure in real time and transmits the pressure to the data processing unit 8 for processing, then the result is displayed on the display screen 9 in real time, the vein and the atrium pressure are greatly different, so that the result displayed on the display screen 9 is from the vein to the atrium, the pressure value and the pressure waveform have obvious changes, medical staff can judge whether the head end of the catheter 1 moves to the junction of the atrium and the superior vena cava according to the pressure, after the catheter 1 moves to the right position, a tube joint at the rear end of the outer tube 3 is connected with a drug delivery.

Example 2

As shown in fig. 4 to 5, in this embodiment, a through connecting lead cavity 303 is further provided in the outer tube 3 in addition to the second lead cavity 301, which can be used for temporary cardiac pacing, as shown in fig. 4, at least one pacing electrode 10 is provided at the head end of the catheter 1, and the electrode lead 11 at the rear side of the pacing electrode 10 and the micro lead 201 of the optical fiber pressure sensor 2 can extend together in the first lead cavity 101 in the catheter 1, and the outside of the electrode lead 11 and the micro lead 201 are both provided with an isolation insulating layer to prevent mutual influence, which is a technique known in the art, the micro lead 201 extends from the first lead cavity 101, then sequentially passes through the second lead cavity 30 in the outer tube 3 body and the third lead cavity 401 in the branch tube 4, and is connected to the connector 5, the electrode lead 11 extends from the first lead cavity 101 and then enters the connecting lead cavity 303 in the outer tube 3, and finally, the device is connected with a temporary pacing device, the rear end of the outer tube 3 is provided with a tube joint which can be connected with the temporary pacing device, and the temporary pacing device and the tube joint are both known in the art.

The optical fiber pressure sensor 2 used in this embodiment is the same as that used in embodiment 1, and if more than two pacing electrodes 10 are provided at the tip end of the catheter 1, the optical fiber pressure sensor 2 may be provided between any two adjacent pacing electrodes 10, or on the catheter at the front side of the most front pacing electrode 10.

The working principle of the embodiment is illustrated by taking temporary cardiac pacing as an example:

when in use, the joint 5 of the branch pipe 4 is connected with the data processing unit 8 through the connecting line 7, so that the connection between the optical fiber pressure sensor 2 and the pressure detection system is realized, and then medical personnel start pipe laying operation. The down tube path of the temporary cardiac pacing is a deep vein-atrium-ventricle, the pressure and waveform of the vein, the atrium and the ventricle are different, medical personnel can judge whether the head end of the catheter 1 moves in the vein or the atrium or the ventricle through the pressure value and the pressure waveform displayed on the display screen 9, and after the head end of the catheter 1 moves in place, the medical personnel can electrify the pacing electrode 10 to carry out temporary pacing operation.

In addition, the above embodiments are only for illustrating the working principle of the present invention in the case that the front end of the catheter is provided with the electronic component, including but not limited to the above embodiments.

Example 3

As shown in fig. 6, the catheter 1 and the outer tube 3 in this embodiment are both solid structures, and this embodiment can be used for situations where only blood pressure needs to be measured, such as situations where hypertension of a special patient cannot be controlled after an operation and a lower tube is used for examination. The optical fiber pressure sensor 2 used in this embodiment is the same as that used in embodiment 1.

Claims

1. A pressure positioning catheter assembly, characterized by: comprises a conduit (1), an optical fiber pressure sensor (2) and an outer tube (3), wherein the optical fiber pressure sensor (2) is arranged at the head end of the conduit (1), the rear end of the conduit (1) is fixedly connected with the outer tube (3), a branch pipe (4) is arranged on one side of the outer pipe (3), a first guide wire cavity (101) is arranged in the guide pipe (1), a second wire cavity (301) is arranged in the outer tube (3), a third wire cavity (401) is arranged in the branch tube (4), the first lead cavity (101), the second lead cavity (301) and the third lead cavity (401) are communicated in sequence, the micro-wire (201) at the rear side of the optical fiber pressure sensor (2) sequentially passes through the first wire cavity (101), the second wire cavity (301) and the third wire cavity (401), the tail end of the branch pipe (4) is provided with a joint (5), and the tail end of the micro-wire (201) is connected with the joint (5).

2. The pressure positioning catheter assembly of claim 1, wherein: the head end of the outer tube (3) is sleeved at the rear end of the catheter (1), and a strain release tube (6) is arranged on the outer side of the head end of the outer tube (3).

3. The pressure positioning catheter assembly of claim 1, wherein: a first overflowing cavity (102) is arranged in the catheter (1), a second overflowing cavity (302) is arranged in the outer tube (3), and the first overflowing cavity (102) is communicated with the second overflowing cavity (302).

4. The pressure positioning catheter assembly of claim 3, wherein: the first overflowing cavity (102) and the second overflowing cavity (302) are eccentrically arranged.

5. The pressure positioning catheter assembly of claim 1, wherein: a connecting wire cavity (303) is arranged in the outer tube (3), and a first wire cavity (101) in the catheter (1) is communicated with a second wire cavity (301) and the connecting wire cavity (303) in the outer tube (3).

6. The pressure positioning catheter assembly of claim 1, wherein: the guide pipe (1) and the outer pipe (3) are both solid structures.

7. The pressure positioning catheter assembly of claim 1, wherein: and the rear end of the outer pipe (3) is provided with a pipe joint.