CN217696592U

CN217696592U - Sacculus forced-out test instrument

Info

Publication number: CN217696592U
Application number: CN202221362174.9U
Authority: CN
Inventors: 李小芳; 王贵群; 李瑷鲡
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-11-01
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a balloon expulsion test device, which relates to the field of medical devices and solves the problems that the existing balloon expulsion test device is inconvenient to insert into the anus and cannot simulate the defecation process well. The technical scheme adopted by the utility model is as follows: the balloon extruding test instrument includes a catheter, a guide wire and a sealing cover, the catheter is a double-layer structure including an inner tube and an outer tube, and the front end of the outer tube is in a closed shape, which is used for inserting into the anus. , the tube section near the front end of the inner tube is in the shape of a curved banana, the outer side of the front end of the outer tube is fixedly provided with a balloon, and the catheter is provided with a through hole connecting the lumen of the inner tube and the inner cavity of the balloon in the tube section where the balloon is located; the rear end of the catheter A connector is provided, and the connector is equipped with a suitable sealing cover; the guide wire is made of hard material and inserted into the lumen of the inner tube, the inner tube and the guide wire are gap-fitted, the front end of the guide wire is located at the front end of the catheter, and the The rear end is located in the closed cavity formed by the connecting head and the sealing cover. The utility model is used for the balloon expulsion test.

Description

Sacculus forced-out test instrument

Technical Field

The utility model relates to the field of medical equipment, specifically an apparatus for implementing sacculus forces out experiment.

Background

The sacculus detrusor out test is an auxiliary examination of the anorectal comprehensive defecation function, can be used for judging whether the rectal sensation and the function of the anal sphincter are normal or not, and whether the anal sphincter is damaged or not and has no contracting function or not, is favorable for judging whether the functions of the rectum and pelvic floor muscles are abnormal or not, and is also favorable for evaluating the functions of the rectum and the pelvic floor muscles. The operation process of the balloon extrusion test is as follows: the doctor places the sacculus in the rectum ampulla of the examinee, injects a certain amount of air or warm water into the sacculus, orders the examinee to take the lateral position or squat the position defecation posture and discharges the sacculus as soon as possible, and the sacculus slides out the anus by oneself at last, or discharges the sacculus after slightly increasing the abdominal pressure. The balloon detrusor test is mainly used for judging the conditions of anus outlet obstruction and defecation incontinence of a patient, and has important reference significance for judging abnormal contraction of pelvic floor muscles and external sphincters and reduction of rectal sensory function. If the patient has the conditions of thick pelvic floor muscles, proctoptosis, long-term constipation and the like, the patient can be clearly diagnosed through a balloon detrusion test.

At present, instruments used in a balloon expulsion test are generally clinical self-made consumable materials and are manufactured by adopting a catheter and a balloon. The manufacturing process is to insert the end tube of the catheter into the balloon and then tighten the end tube by using cotton threads. The clinical self-made consumable materials have the following disadvantages: firstly, the cotton thread is easy to loosen, and the balloon is easy to slip when the examinee performs the actions of discharging and pressurizing the abdomen; secondly, the maximum safe expansion amount of the balloon is not easy to control, and the possibility of balloon explosion exists; thirdly, the catheter is soft and difficult to insert into the anus smoothly, and the operation is difficult after the end tube of the catheter is bound with the balloon; the fourth clinical self-made consumable is not independently packaged, so that the patient can be doubtful and even mentally contradicted when receiving the examination.

The patent with the publication number of CN 209696046U discloses a catheter for balloon extrusion test and biofeedback home training, which comprises a catheter main body, wherein the catheter main body is rubber or silica gel, a catheter cuff is arranged on the catheter main body, and the volume of the catheter cuff is 200-300 ml; one end of the catheter main body is a closed balloon head, the closed balloon head is connected with the catheter cuff, the other end of the catheter main body is connected with a water injection valve, and one end of the water injection valve is connected with a valve connector. The scheme that this patent was disclosed is actual and the structure of above-mentioned clinical self-control consumptive material is unanimous basically, because the pipe main part is rubber or silica gel material, also belongs to the hose, has the problem of the anal of being not convenient for insert equally to and be not convenient for insert the problem of the degree of depth to the accuse, still there is the pipe main part shape fixed in addition, can not accurately simulate the not enough of defecation process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sacculus forces out experimental apparatus solves the problem that current sacculus forces out experimental apparatus and is not convenient for insert the anus and can not simulate the defecation process well.

The utility model discloses a technological effect be: the sacculus extrusion test apparatus comprises a catheter, a guide wire and a sealing cover, wherein the catheter is of a double-layer structure, the catheter comprises an inner tube and an outer tube, the inner tube is an elastic tube, the outer tube is a hose, the inner tube and the outer tube are in interference fit, the front end of the outer tube is closed, the tube section of the inner tube close to the front end is in a bent banana shape, the outer side of the front end of the outer tube is fixedly provided with the sacculus, the sacculus is positioned on the outer side of the outer tube, the tube section of the catheter where the sacculus is positioned is provided with at least one through hole for communicating the tube cavity of the inner tube with the inner cavity of the sacculus, the through hole penetrates through the inner tube and the outer tube, the rear end of the catheter is provided with a connector, and the connector is provided with the sealing cover in a matched mode; the seal wire is the stereoplasm material, and the seal wire is inserted in the lumen of inner tube, clearance fit between inner tube and the seal wire, and the front end of seal wire is located the front end of pipe, and the rear end of seal wire is located the closed cavity that connector and sealed lid formed.

Further, the method comprises the following steps: the rear end of the guide wire is provided with an expanding structure, the size of the expanding structure is larger than the inner diameter of the inner pipe, and the expanding structure is positioned inside the sealing cover. For example, the guide wire is made of metal, and the expanding structure is a ring or a spherical structure and is integrated with the guide wire.

Further, the method comprises the following steps: the sealing cover is connected and communicated with one branch pipe of the three-way valve, and the other two branch pipes of the three-way valve are respectively connected with the injection joint and the discharge joint.

Further, the method comprises the following steps: the branch pipe of the three-way valve connected with the injection joint is provided with a one-way valve.

Further, the method comprises the following steps: the discharge joint is connected with a pressure measuring device.

Further, the method comprises the following steps: the catheter is also provided with length scales, and the zero scales of the length scales are positioned at the front end of the outer tube.

Further, the method comprises the following steps: lubricating liquid is filled in a gap between the inner tube and the guide wire, the balloon is in a hollow and shriveled state, and a closed film is arranged at the through hole on the outer side of the outer tube.

Further, the method comprises the following steps: the central line of the through hole is oblique to the central line of the conduit.

Further, the method comprises the following steps: the front ends of the inner pipe and the outer pipe are both closed, and the front end of the outer pipe is blunt. For example, the front end of the outer tube is hemispherical.

The utility model has the advantages that: the pipe is the bilayer structure including inner tube and outer tube, and the inner tube is the elastic tube, and the outer tube is the hose, and the seal wire is the stereoplasm material, and the inner tube is after inserting the seal wire, and the pipe is flat or is close flat shape and have certain hardness under the effect of seal wire, is convenient for insert the operation with the front end of pipe, does benefit to accurate control depth of insertion moreover. After the front end of the catheter is inserted into a target position, the guide wire is pulled out from the rear end of the inner tube, and the inner tube is restored to a natural state, namely, a bent banana shape, so that the defecation process is better simulated, and a balloon expelling test can be more accurately carried out.

The diameter of the guide wire is small, so that the guide wire is not convenient to directly hold, and the rear end of the guide wire is provided with the diameter expanding structure, so that the guide wire can be conveniently pulled out from the inner tube through the diameter expanding structure. The sealing cover is connected with one branch pipe of the three-way valve, and the other two branch pipes of the three-way valve are respectively connected with the injection joint and the discharge joint, so that gas injection or liquid injection is facilitated, and liquid drainage is also facilitated. The discharge joint is connected with a pressure measuring device, so that the pressure of gas injection or liquid injection can be detected, and the condition that the injection amount of the gas injection or the liquid injection is too much or too little is avoided. Lubricating liquid is filled in a gap between the inner tube of the catheter and the guide wire, the inner tube and the guide wire are not bonded, and the difficulty in pulling out the guide wire is reduced.

Drawings

Fig. 1 is a schematic structural view of the balloon extrusion test apparatus of the present invention before the guide wire is extracted.

Fig. 2 is a schematic structural view of the balloon extrusion test apparatus after the guide wire is drawn out.

Reference numerals: the device comprises a catheter 1, an inner tube 11, an outer tube 12, a through hole 13, a connector 14, a guide wire 2, a finger ring 21, a sealing cover 3, a balloon 4, a three-way valve 5, an injection connector 51, a discharge connector 52, a one-way valve 53 and a sealing film 6.

Detailed Description

For the conventional balloon extrusion test apparatus, in order to facilitate the insertion of the catheter into the anus and to insert the catheter tip and the balloon to the target depth, the hardness of the catheter itself is usually increased, for example, the diameter or thickness of the catheter is increased, or the catheter is made of a material with higher hardness. After the catheter is inserted, water or gas injection operation is carried out on the balloon to simulate banana-shaped defecation, and after the hardness of the whole catheter is improved, a test cannot be carried out well, and the accuracy of a test result is affected. This application wears to establish the seal wire in the pipe, and the seal wire is the stereoplasm material for improve the hardness of pipe, both be convenient for insert the operation, can also guarantee the accuracy of depth of insertion. And after the front end of the guide wire and the saccule are inserted into the target position, the guide wire is drawn out, and then the subsequent operation is carried out. This application still designs the double-deck structure of compriseing inner tube and outer tube with the pipe, and wherein the inner tube is the elastic tube, and the outer tube is the hose, and the back is taken out from the inner tube to the seal wire, and the inner tube automatic recovery is crooked banana form, and the pipe can simulate defecation process better, helps accurately carrying out the sacculus and forces out the experiment. For the examinee, the guide wire is completely coated by the inner tube, so that mucous membrane damage cannot be caused; for operators, the catheter has small size, is convenient for rapid insertion operation, and can ensure the accuracy of the insertion position; for the test, the guide wire is pulled out when the balloon is injected with water or gas, and the inner tube is automatically recovered to be in a bent banana shape after being pulled out, so that the defecation process can be better simulated, and the accuracy of the balloon extrusion test is improved.

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, the utility model discloses sacculus forces out experimental apparatus, including pipe 1, seal wire 2 and sealed lid 3, pipe 1 includes inner tube 11 and outer tube 12, and pipe 1 is bilayer structure, and outer tube 12 overlaps in the outside of inner tube 11. The front end of the inner tube 11 overlaps the front end of the outer tube 12, and the rear end of the inner tube 11 overlaps or does not overlap, preferably overlaps, the rear end of the outer tube 12. The outer tube 12 is a flexible tube, for example, made of silicone. The inner tube 11 is an elastic tube made of plastic or metal, and the tube section of the inner tube 11 near the front end is in a bent banana shape in a natural state. The inner tube 11 and the outer tube 12 are in interference fit, the outer tube 12 is kept fixed relative to the inner tube 11 by the own contraction force, or the outer tube 12 and the inner tube 11 may be fixed by adhesive bonding. The front end of the catheter 1 is closed, i.e., the front end of the outer tube 12 is closed, and the front end of the inner tube 11 is closed or open, but preferably closed. The front end of the outer tube 12 is intended for direct insertion into the anus and is therefore preferably blunt, for example hemispherical. The front end of the inner tube 11 preferably conforms to the front end of the outer tube 12 and is also hemispherical.

The rear end of the pipe 1 is an injection end for water or gas injection, which is generally performed through the rear end of the inner tube 11. The injection end of the catheter 1 is provided with a connector 14, the connector 14 is made of hard material, such as hard plastic, and the connector 14 and the catheter 1 are bonded and fixed. The coupling head 14 is provided with an adapted sealing cap 3, the sealing cap 3 being intended for temporarily closing the rear end of the catheter 1, and it is also possible to provide an adapted sealing plug instead of the sealing cap 3. For example, the coupling head 14 is provided with an external thread and the sealing cap 3 with an adapted internal thread. The coupling head 14 and the outer tube 12 are fixed relative to each other, for example, by adhesive bonding. In order to facilitate observing the insertion depth of the front end of the outer tube 12, the outer side of the catheter 1 is provided with length scales which are preferably arranged on the inner tube 11, the outer tube 12 is made of transparent materials, the phenomenon that the scales are inaccurate due to the deformation of the outer tube 12 is avoided, and the zero scales of the length scales are located at the front end of the outer tube 12. The length scale may also be differentiated by color to facilitate viewing and control the depth of insertion.

The balloon 4 is fixedly provided outside the distal end of the outer tube 12, and the balloon 4 is positioned outside the outer tube 12, for example, the balloon 4 is fixedly adhered to the outside of the catheter 1. The length and the maximum volume of the balloon 4 are determined according to the requirement of the balloon 4 approximation test. Wherein, the length of the balloon 4 refers to the length of two ends of the balloon 4 along the axial line of the catheter 1 along the axial line direction of the catheter 1; the maximum volume of the balloon 4 means that the balloon 4 is safe from a deflated state to that volume. For example, the length of the balloon 4 is 3.3cm, the maximum volume of the balloon 4 is 400ml, and compared with the existing common balloon 4 with the maximum volume of 200-300 ml, the volume of the balloon 4 is increased, so that the safety is improved, and the clinical use is more convenient.

The catheter 1 is provided with at least one through hole 13 which is used for communicating the lumen of the inner tube 11 with the inner cavity of the balloon 4 in the tube section where the balloon 4 is positioned, and the through hole 13 penetrates through the inner tube 11 and the outer tube 12, so that the purpose of injecting water or gas into the balloon 4 through the inner tube 11 of the catheter 1 is realized. For example, referring to fig. 1 and 2, the central portion of the tube section in which the balloon 4 is located is provided with a through hole 13. The guide wire 2 is inserted into the lumen of the inner tube 11 of the catheter 1, and the diameter of the through hole 13 may be set smaller than the diameter of the guide wire 2 in order to prevent the guide wire 2 from being inserted into the through hole 13 with its tip end displaced when being inserted into the inner tube 11; or, the central line of the through hole 13 is obliquely intersected with the central line of the conduit 1, the intersection point of the central line marking the through hole 13 and the central line of the conduit 1 is an intersection point, and an included angle formed by a connecting line between the front end of the conduit 1 and the intersection point and the central line of the through hole 13 is an obtuse angle, as shown in fig. 1 and 2.

The sealing cap 3 at the rear end of the guide tube 1 may have only a sealing function, and water or air may be injected through the connector 14 after the sealing cap 3 is opened, or water or air may be directly injected through the rear end of the guide tube 1. Another solution is provided below, see fig. 1, in which the sealing cap 3 is connected and communicates with one branch of the three-way valve 5, and the other two branches of the three-way valve 5 are connected to a filling connection 51 and a discharge connection 52, respectively. The sealing cover 3 and the branch pipe of the three-way valve 5 can be connected through a joint or directly and fixedly connected. The injection fitting 51 is used in connection with an injection device for water or gas injection. The drain connector 52 is used for draining or venting after the test is completed. The three-way valve 5 is used to adjust the opening and closing of each passage. In order to avoid reverse flow of water, the three-way valve 5 is provided with a check valve 53 on the branch pipe connected with the injection joint 51. The discharge connector 52 may be directly opened or connected to a pressure measuring device to monitor the internal pressure of the balloon 4.

The guide wire 2 is arranged in the lumen of the inner tube 11 of the catheter 1, and the guide wire 2 is made of hard material, preferably metal material, such as steel wire or alloy wire. The guide wire 2 is inserted into the lumen of the inner tube 11, and the front end of the guide wire 2 is positioned at the front end of the inner tube 11, so that the front end of the catheter 1 has enough rigidity. The rear end of the guide wire 2 is located in a closed cavity formed by the connector 14 and the sealing cover 3. The length of the guide wire 2 is slightly larger than that of the catheter 1, and the rear end of the guide wire 2 is always positioned outside the lumen of the inner tube 11, so that the guide wire 2 can be inserted into and pulled out of the rear end of the inner tube 11 conveniently. Clearance fit between inner tube 11 and seal wire 2, clearance value size is moderate, both will avoid the mutual adhesion of inner tube 11 and 2 clearance undersize of seal wire, influence the inserting and extracting of seal wire 2, also avoid inner tube 11 and 2 clearances of seal wire too big, the unable effective problem that supports pipe 1 of pipe 1 appears.

Since the guide wire 2 itself is thin, in order to facilitate insertion and extraction of the guide wire 2, a diameter-expanding structure is provided at the rear end of the guide wire 2, and the diameter-expanding structure means that the guide wire 2 is expanded in size so as to be held. For example, the diameter-expanding structure is the finger ring 21, but the diameter-expanding structure may be a spherical structure, and the diameter-expanding structure is fixedly connected with the guide wire 2, or is an integral body. The diameter-expanding structure has a size larger than the inner diameter of the inner tube 11 and smaller than the size of the sealing cap 3. The distance from the diameter-expanding structure to the front end of the guide wire 2 is preferably equal to the length of the inner tube 11, the guide wire 2 is completely inserted into the inner tube 11, the diameter-expanding structure is just positioned at the rear end of the inner tube 11, the diameter-expanding structure limits the insertion depth of the guide wire 2, and the problem that the guide wire 2 is excessively inserted to puncture the front end of the catheter 1 is avoided.

In order to avoid adhesion between the guide wire 2 and the inner tube 11, a lubricant is filled in the gap between the inner tube 11 and the guide wire 2, and the lubricant is generally selected from a lubricating liquid. In order to avoid the lubricating liquid from entering the balloon 4 through the through holes 13, the outer side of the outer tube 12 is provided with a closing film 6 at the through holes 13. The sealing film 6 is used for temporarily sealing the through hole 13, can be adhered to the outer side of the through hole 13, and can be broken or broken by water pressure or air pressure during water injection or gas injection, as shown in fig. 2. The sacculus 4 is empty flat form to in insert the operation, set up the extraction opening between sacculus 4 and the outer tube 12, realize the empty flat state of sacculus 4 through the mode of bleeding.

The utility model discloses the sacculus forces out experimental apparatus when the assembly, can inject into proper amount lubricated liquid earlier to the lumen of inner tube 11 through 1 rear end of pipe earlier, then the front end with seal wire 2 is from inserting inner tube 11, lubricated liquid natural distribution is in whole seal wire 2, when seal wire 2 inserts to the hole enlargement structure and is located 1 rear end of pipe, the front end of seal wire 2 is located the front end of pipe 1, at last with sealed lid 3 adorn in connector 14, the rear end of seal wire 2 is located the closed cavity that connector 14 and sealed lid 3 formed. During the balloon extrusion test, when the guide wire 2 needs to be pulled out, the sealing cover 3 is firstly taken down, the guide wire 2 is pulled out from the catheter 1, the sealing cover 3 is arranged on the connector 14, the three-way valve 5 is adjusted, and water or gas is injected into the balloon 4 through the injection connector 51. The actual water injection amount or gas injection amount of the balloon 4 can be finely adjusted by adjusting the threaded connection amount of the sealing cover 3 and the connector 14.

Claims

1. Sacculus detritus test apparatus which characterized in that: the catheter comprises a catheter (1), a guide wire (2) and a sealing cover (3), wherein the catheter (1) is of a double-layer structure, the catheter (1) comprises an inner tube (11) and an outer tube (12), the inner tube (11) is an elastic tube, the outer tube (12) is a hose, the inner tube (11) and the outer tube (12) are in interference fit, the front end of the outer tube (12) is closed, a tube section of the inner tube (11) close to the front end is bent, a balloon (4) is fixedly arranged on the outer side of the front end of the outer tube (12), the balloon (4) is positioned on the outer side of the outer tube (12), the catheter (1) is provided with at least one through hole (13) which is communicated with a tube cavity of the inner tube (11) and an inner cavity of the balloon (4) in the tube section where the balloon (4) is positioned, the through hole (13) penetrates through the inner tube (11) and the outer tube (12), the rear end of the catheter (1) is provided with a connector (14), and the connector (14) is provided with the sealing cover (3) in an adaptive manner; the guide wire (2) is made of hard materials, the guide wire (2) is inserted into a lumen of the inner tube (11), the inner tube (11) is in clearance fit with the guide wire (2), the front end of the guide wire (2) is positioned at the front end of the catheter (1), and the rear end of the guide wire (2) is positioned in a closed cavity formed by the connector (14) and the sealing cover (3).

2. The balloon expulsion trial instrument of claim 1, wherein: the rear end of the guide wire (2) is provided with an expanding structure, the size of the expanding structure is larger than the inner diameter of the inner pipe (11), and the expanding structure is positioned in the sealing cover (3).

3. The balloon expulsion trial instrument of claim 2, wherein: the guide wire (2) is made of metal, and the diameter expanding structure is a ring (21) or a spherical structure and is integrated with the guide wire (2).

4. The balloon expulsion trial instrument of claim 1, wherein: the sealing cover (3) is connected and communicated with one branch pipe of the three-way valve (5), and the other two branch pipes of the three-way valve (5) are respectively connected with the injection joint (51) and the discharge joint (52).

5. The balloon expulsion trial instrument of claim 4, wherein: the three-way valve (5) is connected with a branch pipe of the injection joint (51) and is provided with a one-way valve (53).

6. The balloon expulsion trial instrument of claim 4, wherein: the discharge joint (52) is connected with a pressure measuring device.

7. The balloon expulsion trial instrument of claim 1, wherein: the catheter (1) is also provided with length scales, and the zero scales of the length scales are positioned at the front end of the outer tube (12).

8. The balloon expulsion test instrument of any of claims 1 to 7, wherein: lubricating liquid is filled in a gap between the inner tube (11) and the guide wire (2), the balloon (4) is in a hollow and shriveled state, and a sealing film (6) is arranged at the through hole (13) outside the outer tube (12).

9. The balloon expulsion trial instrument of claim 8, wherein: the central line of the through hole (13) is oblique to the central line of the conduit (1).

10. The balloon expulsion test instrument of any of claims 1 to 7, wherein: the front ends of the inner tube (11) and the outer tube (12) are both closed, and the front end of the outer tube (12) is blunt.