Expander and expander equipment comprising same

Abstract

The expander comprises a thin film piece and a hollow supporting pipe, the tail end of the supporting pipe is of a closed structure, the head end of the thin film piece is provided with an opening, and the supporting pipe penetrates into an inner cavity of the thin film piece from the opening and is connected with the tail end of the thin film piece. A first inner cavity is formed between the outer wall of the supporting pipe and the inner wall of the film part, a water inlet is formed in the head end of the supporting pipe, a first outlet is formed in the side wall, close to the tail end of the film part, of the supporting pipe, the water inlet, the first outlet and the first inner cavity are communicated, and the supporting pipe is used for guiding the film part to enter the human body and filling fluid into the film part to enable the film part to expand. The supporting tube is fixedly connected with the thin film part, when the supporting tube stretches into a human body, the thin film part can be driven to enter together, after the supporting tube enters a certain depth, fluid is injected into the supporting tube, the fluid enters the first inner cavity from the first outlet, the first inner cavity is made to be filled and expanded, and instruments such as an endoscope can stretch into the first inner cavity conveniently to complete inspection work.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an expander and expander equipment containing the same. Background Art

[0002] During hysteroscopy, the uterus needs to be filled with water to expand it, making it easier for the endoscope to enter for observation. However, if the internal expansion is not enough, the uterine cavity space is small and the uterine wall cannot be observed in detail. If the internal pressure is too high or uneven, the uterine wall will be too thin, and the water flow inside the uterine cavity will easily tear the uterine wall and blood vessels, causing water to enter the circulatory system and abdominal cavity, which can endanger the patient's life in severe cases. It is difficult to control the internal pressure of the water-expanded uterus during hysteroscopy, and the thickness of each person's uterine wall is different. Even experienced doctors find it difficult to determine the amount of water filled. An inflatable film bag needs to be set up to assist in filling the uterus with water, but existing expanders usually require a guide to assist the expander in entering the human body, and a detector is needed to detect the depth of the expander into the body. The operation is complicated, resulting in a lot of time spent on preparation before the examination. Summary of the invention

[0003] The object of the present invention is to provide an expander and an expander device containing the same, so as to solve the technical problem that in the prior art, the expander usually needs a guide to assist the expander to enter the human body, and a detector is needed to detect the penetration depth of the expander, which is complicated to operate and requires a lot of time for preparation before examination.

[0004] The present invention provides an expander, comprising a film member and a hollow support tube, wherein the end of the support tube is a closed structure, the head end of the film member has an opening, the support tube penetrates into the inner cavity of the film member from the opening and is connected to the end of the film member, a first inner cavity is formed between the outer wall of the support tube and the inner wall of the film member, the head end of the support tube is provided with a water inlet, the side wall of the support tube close to the end of the film member is provided with a first outlet, the water inlet, the first outlet and the first inner cavity are connected, the support tube is used to guide the film member into the human body and to fill the film member with fluid to expand it.

[0005] As described above, the expander, the film member includes a first film and a second film, the second film is located inside the first film, and the second film is spaced apart from the first film to form a second inner cavity, the end of the support tube passes through the second film and is connected to the first film, the connection between the second film and the support tube is a sealed connection, at least one second outlet is provided on the support tube, the water inlet, the second outlet and the second inner cavity are connected to form a flow channel, a switch component for opening or closing the flow channel is provided in the support tube, and the second outlet is used to supply water to the second inner cavity.

[0006] In the expander as described above, the switch assembly includes an elastic member and a choke valve, the choke valve is located between the first outlet and the second outlet, one end of the elastic member is connected to the choke valve, and the other end is connected to the end of the support tube. When the first inner cavity is filled with fluid and reaches a certain pressure, the fluid in the support tube squeezes the choke valve to move it toward the end of the support tube to make the second outlet conductive.

[0007] As described above, the expander has at least one partition membrane in the second inner cavity, one end of the partition membrane is connected to the outer wall of the second film, and the other end is connected to the inner wall of the first film. The partition membrane divides the second inner cavity into a plurality of partition chambers, and each of the partition chambers is connected to the water inlet.

[0008] In the expander as described above, the thickness of the first film is smaller than the thickness of the second film.

[0009] As described above, the fluid rate of the support tube is adjustable. When the film element reaches a preset depth in the human body, the fluid in the support tube flows into the first inner cavity at a high rate and pulls the film element into the human body.

[0010] In the expander as described above, scale lines are provided on the outer side wall of the film element, and the scale lines are used to determine whether the film element has reached a preset position.

[0011] The expander as described above includes a base, the film member and the support tube are both connected to the base, and the base is provided with a first instrument port and at least one second instrument port, the first instrument port is used for allowing an instrument to enter the first inner cavity, and the second instrument port is used for allowing an instrument to enter the second inner cavity.

[0012] As described above, the end of the support tube is provided with an arc-shaped buffer structure protruding outward along the axis, and the arc-shaped buffer structure is used to close the end port of the support tube and to form a flexible contact with the human body.

[0013] The present invention also provides an expander device, comprising the expander as described above.

[0014] Implementing the embodiments of the present invention will have the following beneficial effects:

[0015] In the present invention, the expander includes a film and a hollow support tube, the end of the support tube is a closed structure, the head end of the film has an opening, the support tube penetrates into the inner cavity of the film from the opening, and is connected to the end of the film, a first inner cavity is formed between the outer wall of the support tube and the inner wall of the film, a water inlet is provided at the head end of the support tube, a first outlet is provided on the side wall of the support tube near the end of the film, the water inlet, the first outlet and the first inner cavity are connected, the support tube is used to guide the film into the human body and to fill the film with fluid to expand it. The connection between the support tube and the film is a fixed connection, when the support tube is extended into the human body, it can drive the film to enter together, after entering to a certain depth, by injecting fluid into the support tube, the fluid enters the first inner cavity from the first outlet, so that the first inner cavity is filled and expanded, which facilitates the endoscope and other instruments to extend into the first inner cavity to complete the inspection work, when it is necessary to understand that the film is a transparent structure, and the endoscope and other instruments can directly observe the situation inside the human body through the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic structural diagram of an expander according to the first embodiment;

[0018] Figure 2 is a cross-sectional view of an expander according to the first embodiment;

[0019] Figure 3 is a schematic structural diagram of an expander according to the second embodiment;

[0020] Figure 4 is a cross-sectional view of an expander according to the second embodiment;

[0021] Figure 5 yes Figure 4 Enlarged view of part A in the middle;

[0022] Figure 6 is a cross-sectional view of an expander according to Embodiment 3;

[0023] Figure 7 It is a schematic diagram of the structure of an expander according to the fourth embodiment.

[0024] Among them: 1. film member; 11. first film; 12. second film; 13. first inner cavity; 14. second inner cavity; 15. separation membrane; 16. separation cavity; 2. support tube; 21. water inlet; 22. first outlet; 23. second outlet; 24. arc-shaped buffer structure; 3. base; 31. first instrument port; 32. second instrument port; 4. switch assembly; 41. elastic member; 42. choke valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, the fluid may be a liquid or a gas.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] Embodiment 1:

[0032] See also Figure 1 and Figure 2 The present invention provides an expander, comprising a film member 1 and a hollow support tube 2, wherein the end of the support tube 2 is a closed structure, the head end of the film member 1 has an opening, the support tube 2 penetrates into the inner cavity of the film member 1 from the opening, and is connected to the end of the film member 1, a first inner cavity 13 is formed between the outer wall of the support tube 2 and the inner wall of the film member 1, a water inlet 21 is provided at the head end of the support tube 2, a first outlet 22 is provided on the side wall of the support tube 2 near the end of the film member 1, the water inlet 21, the first outlet 22 and the first inner cavity 13 are connected, the support tube 2 is used to guide the film member 1 into the human body and to fill the film member 1 with fluid to expand it. The connection between the support tube 2 and the film member 1 is a fixed connection. When the support tube 2 is inserted into the human body, the film member 1 can be driven in together. After entering to a certain depth, fluid is injected into the support tube 2, and the fluid enters the first inner cavity 13 from the first outlet 22, so that the first inner cavity 13 is filled and expanded, making it convenient for instruments such as endoscopes to be inserted into the first inner cavity 13 to complete inspection work. It should be understood that the film member 1 is a transparent structure, and instruments such as endoscopes can directly observe the internal conditions of the human body through the film member 1.

[0033] Specifically, the support tube 2 is a flexible tube with a certain rigidity, which can provide support for the film 1 without damaging the human body. In a specific embodiment, the support tube 2 is a silicone tube. The film 1 is a combination of a spherical structure and a tubular structure, which is an integrated structure, wherein the spherical structure is used to extend into the human body to form a balloon.

[0034] Furthermore, the fluid rate of the support tube 2 is an adjustable rate. When the depth of the film 1 inserted into the human body reaches a preset position, the fluid in the support tube 2 flows into the first inner cavity 13 at a high rate and pulls the film 1 into the human body. It should be understood that the diameter of the film 1 is much larger than the diameter of the support tube 2. When the support tube 2 drives the film 1 into the human body, the film 1 is in a deflated state. After the support tube 2 enters the human body, the human body squeezes the film 1, so that the film 1 is tightly attached to the outer wall of the support tube 2 and squeezes toward the head end of the support tube 2. The operator can judge the depth of entry of the support tube 2 by observing the length of the film 1 retained outside. When the required position is reached, the first inner cavity 13 is quickly filled with fluid through the support tube 2, so that the film 1 can be quickly filled in the human body, and the impact force of the fluid is used to pull the part of the film 1 outside the human body, so that the balloon of the film 1 enters the human body.

[0035] Furthermore, the outer wall of the film 1 is provided with scale lines, and the scale lines are used to judge whether the film 1 has reached the preset position. When the support tube 2 drives the film 1 to enter the human body, the film 1 is in a deflated state. After the support tube 2 enters the human body, the human body squeezes the film 1, and the film 1 is pressed against the support tube 2, and the outer periphery of the part of the film 1 that enters the human body is squeezed by the outside of the human body. When the depth of the film 1 entering the human body reaches the preset scale line, the first inner cavity 13 is quickly filled with fluid through the support tube 2, so that the film 1 can be quickly filled in the human body, and the impact force of the fluid is used to pull the part of the film 1 outside the human body, so that the balloon of the film 1 enters the human body.

[0036] Further, the expander includes a base 3, and the film member 1 and the support tube 2 are both connected to the base 3. The support tube 2 is fixed on the base 3, and a first overflow port is provided on the base 3. In the initial state, the first overflow port is blocked by a hole plug. When the fluid in the first inner cavity 13 is discharged, the hole plug on the first overflow port is opened so that the fluid in the first inner cavity 13 can flow out from the first overflow port to adjust the internal pressure of the first inner cavity 13. The fluid in the first inner cavity 13 can also be discharged after the operation is completed, so as to facilitate the expansion device to be taken out of the human body.

[0037] Furthermore, the end of the support tube 2 is provided with an arc-shaped buffer structure 24 protruding outward along the axis, and the arc-shaped buffer structure 24 is used to close the end port of the support tube 2 and to form a flexible contact with the human body. Specifically, the arc-shaped buffer structure 24 and the support tube 2 are an integrated structure, and the arc-shaped buffer structure 24 is a hemispherical structure protruding outward, which can not only close the end port of the support tube 2 to prevent the fluid from flowing out of the end port of the support tube 2, but also enable the arc-shaped buffer structure 24 to form a flexible contact with the human body when the support tube 2 contacts the human body, so as to avoid the sharp part of the end of the support tube 2 from injuring the human body.

[0038] In some other optional embodiments, the arc-shaped buffer structure 24 may also be a spherical plug, which blocks the end of the support tube 2 so that the fluid in the support tube 2 does not flow out from the end of the support tube 2 .

[0039] Embodiment 2:

[0040] See also Figure 3-Figure 5 The difference between the second embodiment and the first embodiment is that the film member 1 includes a first film 11 and a second film 12, the second film 12 is located inside the first film 11, and the second film 12 is spaced apart from the first film 11 to form a second inner cavity 14, the end of the support tube 2 passes through the second film 12 and is connected to the first film 11, the connection between the second film 12 and the support tube 2 is a sealed connection, at least one second outlet 23 is provided on the support tube 2, the water inlet 21, the second outlet 23 and the second inner cavity 14 are connected to form a flow channel, a switch component 4 for opening or closing the flow channel is provided in the support tube 2, and the second outlet 23 is used to supply water to the second inner cavity 14. After the thin film member 1 is guided into the human body through the support tube 2, the support tube 2 is filled with fluid, and the fluid first flows into the first inner cavity 13 from the first outlet 22. During the process of the fluid filling the first inner cavity 13, the pressure in the first inner cavity 13 continues to increase. When the internal pressure reaches a certain value, the switch component 4 is squeezed to move the switch component 4 toward the end of the support tube 2, so that the fluid in the support tube 2 can flow out from the second outlet 23, and the flow channel is connected to fill the second inner cavity 14 with fluid.

[0041] In some other embodiments, the switch assembly 4 can be a silicone plug detachably arranged on the second outlet 23. When the first inner cavity 13 is filled and expanded, tweezers are inserted into the first inner cavity 13 to pull out the silicone plug so that the fluid in the support tube 2 can flow out from the second outlet 23.

[0042] Further, the switch assembly 4 includes an elastic member 41 and a choke valve 42, the choke valve 42 is located between the first outlet 22 and the second outlet 23, one end of the elastic member 41 is connected to the choke valve 42, and the other end is connected to the end of the support tube 2, when the first inner cavity 13 is filled with fluid to a certain pressure, the fluid in the support tube 2 squeezes the choke valve 42 to move it toward the end of the support tube 2 to make the second outlet 23 conductive. Specifically, the elastic member 41 can be a spring or a spring sheet, the choke valve 42 is circumferentially pressed against the inner wall of the support tube 2, and a certain force needs to be applied to it to make it move along the inner wall of the support tube 2, one end of the elastic member 41 is connected to the choke valve 42, and the other end abuts against the arc-shaped buffer structure 24.

[0043] In some other embodiments, the switch assembly 4 can also be a pressure plug or a blocker, which is blocked in the inner tube of the support tube 2. The first inner cavity 13 needs to reach a certain pressure before the switch assembly 4 can be pushed to open the second outlet 23 to open the flow channel.

[0044] Furthermore, a first instrument opening 31 and at least one second instrument opening 32 are provided on the base 3 . The first instrument opening 31 is used for allowing instruments to enter the first inner cavity 13 , and the second instrument opening 32 is used for allowing instruments to enter the second inner cavity 14 .

[0045] Embodiment three:

[0046] See also Figure 6 The difference between the third embodiment and the second embodiment is that at least one partition membrane 15 is provided in the second inner cavity 14, one end of the partition membrane 15 is connected to the outer wall of the second film 12, and the other end is connected to the inner wall of the first film 11. The partition membrane 15 divides the second inner cavity 14 into a plurality of partition chambers 16, and each of the partition chambers 16 is connected to the water inlet 21. There are multiple second outlets 23, which are distributed in a ring shape on the support tube 2. The number of second outlets 23 is the same as the number of partition chambers 16, and they correspond one to one. For the partition chamber 16 that does not need to be filled with fluid, the second outlet 23 corresponding to the partition chamber 16 is plugged by clamping the hole plug through the long clamp from the first inner cavity 13 to block the water outflow.

[0047] Specifically, the number of the second instrument openings 32 is the same as the number of the separation chambers 16 , and each second instrument opening 32 is communicated with one of the separation chambers 16 , so that an instrument can enter each separation chamber 16 .

[0048] Furthermore, the thickness of the first film 11 is less than that of the second film 12. Specifically, the thickness of the first film 11 is 0.0001 mm-0.1 mm. When only one side of the partition cavity 16 is actually used, the remaining first film 11 can be torn out, and the clamp can be extended from the second inner cavity 14 to clamp the inner wall of the first film 11, so that the first film 11 section where the partition cavity 16 is located is torn out and clamped out by the clamp; or the clamp can be contacted with the first film 11 after applying a micro-current or micro-voltage to the clamp, so that the first film 11 section where the partition cavity 16 is located is broken, so that the device can extend out of the first film 11 and directly contact the affected part for treatment.

[0049] Specifically, a plurality of lamp beads are disposed on the outer wall of the support tube 2 for providing lighting, and the plurality of lamp beads are distributed in a ring shape on the outer wall of the support tube 2, which can illuminate the affected area and facilitate observation by the operator.

[0050] Embodiment 4:

[0051] See also Figure 7 The difference between the fourth embodiment and the first embodiment is that the film member 1 can also be an elliptical structure.

[0052] The present invention also provides an expander device, including the expander as described above. The support tube 2 is connected to the expander device, and the expander device can provide fluid to the support tube 2. The expander device is provided with a pressure detector, and the pressure detector can enter the first inner cavity 13 and the second inner cavity 14 with the fluid to monitor the pressure of the first inner cavity 13 and the second inner cavity 14 in real time, so as to conveniently control the amount of fluid filled and avoid excessive pressure in the uterine cavity. The pressure detector can be a disposable product, and after the fluid enters the first inner cavity 13 or the second inner cavity 14 for use, it is discarded together with the expander.

[0053] The above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the protection scope of the invention.

Claims

1. An expander, characterized in that: The invention comprises a film member (1) and a hollow support tube (2), wherein the end of the support tube (2) is a closed structure, the head end of the film member (1) has an opening, the support tube (2) penetrates into the inner cavity of the film member (1) from the opening and is connected to the end of the film member (1), a first inner cavity (13) is formed between the outer wall of the support tube (2) and the inner wall of the film member (1), the head end of the support tube (2) is provided with a water inlet (21), the side wall of the support tube (2) close to the end of the film member (1) is provided with a first outlet (22), the water inlet (21), the first outlet (22) and the first inner cavity (13) are connected, and the support tube (2) is used to guide the film member (1) into the human body and to fill the film member (1) with fluid to expand it.

2. The expander according to claim 1, characterized in that The film element (1) comprises a first film (11) and a second film (12), wherein the second film (12) is located inside the first film (11), and the second film (12) and the first film (11) are spaced apart to form a second inner cavity (14), the end of the support tube (2) passes through the second film (12) and is connected to the first film (11), the connection between the second film (12) and the support tube (2) is a sealed connection, at least one second outlet (23) is provided on the support tube (2), the water inlet (21), the second outlet (23) and the second inner cavity (14) are connected to form a flow channel, a switch assembly (4) for opening or closing the flow channel is provided inside the support tube (2), and the second outlet (23) is used to supply water to the second inner cavity (14).

3. The expander according to claim 2, characterized in that: The switch assembly (4) comprises an elastic member (41) and a choke valve (42); the choke valve (42) is located between the first outlet (22) and the second outlet (23); one end of the elastic member (41) is connected to the choke valve (42), and the other end is connected to the end of the support tube (2); when the first inner cavity (13) is filled with fluid and reaches a certain pressure, the fluid in the support tube (2) squeezes the choke valve (42) to move it toward the end of the support tube (2), so that the second outlet (23) is conductive.

4. The expander according to claim 3, characterized in that: At least one partition membrane (15) is provided in the second inner cavity (14), one end of the partition membrane (15) is connected to the outer wall of the second film (12), and the other end is connected to the inner wall of the first film (11), and the partition membrane (15) divides the second inner cavity (14) into a plurality of partition chambers (16), and each of the partition chambers (16) is connected to the water inlet (21).

5. The expander according to claim 4, characterized in that: The thickness of the first film (11) is smaller than the thickness of the second film (12).

6. The expander according to claim 1, characterized in that: The fluid velocity of the support tube (2) is an adjustable velocity, and when the film (1) is inserted into the human body to a depth reaching a preset position, the fluid in the support tube (2) flows into the first inner cavity (13) at a high velocity and pulls the film (1) into the human body.

7. The expander according to claim 6, characterized in that The outer side wall of the film element (1) is provided with scale lines, and the scale lines are used to judge whether the film element (1) has reached a preset position.

8. The expander according to claim 2, characterized in that: The expander comprises a base (3), the film member (1) and the support tube (2) are both connected to the base (3), and the base (3) is provided with a first instrument port (31) and at least one second instrument port (32), the first instrument port (31) is used for allowing an instrument to enter the first inner cavity (13), and the second instrument port (32) is used for allowing an instrument to enter the second inner cavity (14).

9. The expander according to claim 1, characterized in that: The end of the support tube (2) is provided with an arc-shaped buffer structure (24) protruding outward along the axis, and the arc-shaped buffer structure (24) is used to close the end port of the support tube (2) and to form a flexible contact with the human body.

10. An expander device, characterized in that: Comprising an expander as claimed in any one of claims 1-9.

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