CN214907546U - Manual negative pressure pump for ligation device and ligation device - Google Patents
Manual negative pressure pump for ligation device and ligation device Download PDFInfo
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- CN214907546U CN214907546U CN202120209939.4U CN202120209939U CN214907546U CN 214907546 U CN214907546 U CN 214907546U CN 202120209939 U CN202120209939 U CN 202120209939U CN 214907546 U CN214907546 U CN 214907546U
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- ligation device
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Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to manual negative pressure pump and loop ligature ware for loop ligature ware. This manual negative pressure pump for ligation device includes: the cylinder body is provided with an opening, and the cylinder bottom of the cylinder body is provided with a first one-way valve; the hollow push rod is provided with a piston which is suitable for extending into the cylinder and moving along the inner wall of the cylinder at one end and a socket joint for sleeving an air pipe at the other end; wherein the piston is provided with a second one-way valve; the driving piston moves towards the direction far away from the cylinder bottom so as to suck external air into the cavity formed by the piston and the cylinder through the second one-way valve after the external air is sucked into the push rod through the sleeve joint. The manual negative pressure pump for the ligation device can generate negative pressure by driving the piston to move through the push rod, has a simple structure, can be manually operated, and reduces the cost; through setting up first, the second check valve on barrel and piston respectively, when the open end of piston to the barrel moved, the stroke of piston all can be used for producing the negative pressure, has promoted the efficiency that the negative pressure produced.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to manual negative pressure pump and loop ligature ware for loop ligature ware.
Background
The ligation device is a medical appliance for sucking the focus tissue of the haemorrhoids by negative pressure and then ligating the focus by a rubber ring. The existing ligation device generally adopts an external electric air pump to generate negative pressure, but the ventilation pipeline of the ligation device is complicated to connect, so that the ligation device is very inconvenient to use. And a ligation device with an internal electric air pump is also adopted, and the ligation device is heavy and high in cost through internal power supply.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a manual negative pressure pump and loop ligature ware for loop ligature ware can produce the negative pressure through manual bleeding, reduction in production cost.
In order to solve the technical problem, the utility model provides a loop ligature utensils manual negative pressure pump, include: the cylinder body is provided with an opening, and the cylinder bottom of the cylinder body is provided with a first one-way valve; the hollow push rod is provided with a piston which is suitable for extending into the cylinder and moving along the inner wall of the cylinder at one end and a socket joint for sleeving an air pipe at the other end; wherein the piston is provided with a second one-way valve; the piston is driven to move towards the direction far away from the cylinder bottom, so that external air is sucked into the push rod through the sleeve joint and then enters a cavity formed by the piston and the cylinder through the second one-way valve; and driving the piston to move towards the direction close to the cylinder bottom so as to discharge the air in the cavity through the first one-way valve.
Further, the manual negative pressure pump for the ligation device further comprises: a drive mechanism; wherein the drive mechanism is adapted to drive the piston towards a direction towards or away from the base of the cartridge.
Further, the driving mechanism includes: the trigger part and a resilient part are sleeved on the push rod; the trigger piece comprises a trigger part, a rotating shaft part and a driving part which are connected in sequence; the driving part is connected with the push rod; the driving part rotates around the rotating shaft part so as to drive the piston to move towards the direction far away from the cylinder bottom through the push rod, and the piston extrudes the rebound piece; and the spring-back part is suitable for driving the piston to move towards the direction close to the cylinder bottom, and the driving part rotates around the rotating shaft part to reset.
Furthermore, a long sliding groove is formed in the other end of the push rod; the driving part is provided with a U-shaped notch; the other end of the push rod is suitable for extending into the U-shaped notch, so that a limiting rod penetrates through the sliding groove through the opening end of the U-shaped notch; when the driving part rotates around the rotating shaft part, the push rod is driven to move through the limiting rod.
Further, the piston comprises a mounting seat arranged on the push rod and a sealing element sleeved on the mounting seat; the second one-way valve is arranged on the mounting seat; and the sealing element is provided with a vent hole communicated with the second one-way valve.
Furthermore, a clamping groove for installation is arranged on the side wall of the barrel.
In another aspect, the present invention also provides a ligation device, including: an inner tube for sucking a lesion; the manual negative pressure pump for the ligation device is described above; one end of the air pipe is sleeved on the sleeve joint of the push rod, and the other end of the air pipe is communicated with the inner pipe; when the end of the inner tube is propped against the focus, the ligation device is suitable for generating negative pressure in the inner tube by using the manual negative pressure pump so as to suck the focus.
The utility model has the advantages that the manual negative pressure pump for the ligation device can drive the piston to move through the push rod to generate negative pressure, has simple structure, can be manually operated and reduces the cost; through setting up first, the second check valve on barrel and piston respectively, when drive piston moves towards the direction of keeping away from the barrel head, the stroke of piston all can be used for producing the negative pressure, has promoted the efficiency that the negative pressure produced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a sectional view of the manual negative pressure pump for a ligation device according to the present invention;
FIG. 2 is a schematic view of the driving mechanism of the manual negative pressure pump for the ligation device according to the present invention;
FIG. 3 is a schematic view showing the engagement between the trigger member and the push rod of the manual negative pressure pump for a ligation device according to the present invention;
fig. 4 is a schematic view of the ligation device of the present invention.
In the figure:
the cylinder body 100, the first one-way valve 110, the second one-way valve 120 and the clamping groove 130;
the push rod 200, the piston 210, the mounting seat 211, the sealing element 212, the vent hole 213, the socket 220 and the chute 230;
the device comprises a driving mechanism 300, a trigger piece 310, a trigger part 311, a rotating shaft part 312, a driving part 313, a U-shaped notch 314, a limiting rod 315 and a rebound piece 320;
an inner tube 400;
the trachea 500.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
When the ligation device is used, the head end of the inner tube in the ligation device is aligned with a focus to be treated, the focus is sucked into the head end of the inner tube by utilizing negative pressure suction, the ligation device is triggered, and the root of the focus is ligated by using a rubber ring to ensure that the focus is ischemic, necrotic and naturally falls off, thereby achieving the purpose of treatment.
Example 1
As shown in fig. 1, the present embodiment provides a manual negative pressure pump for a ligation device, including: a cylinder body (100) provided with an opening, wherein the cylinder bottom of the cylinder body is provided with a first one-way valve (110); a hollow push rod (200), one end of which is provided with a piston (210) which is suitable for extending into the cylinder body (100) and is attached to the inner wall of the cylinder body to move, and the other end of which is provided with a socket (220) for being sleeved with an air pipe; wherein a second one-way valve (120) is arranged on the piston (210); the piston (210) is driven to move towards the direction far away from the cylinder bottom, so that external air is sucked into the push rod (200) through the socket (220) and then enters a cavity formed by the piston (210) and the cylinder body (100) through the second one-way valve (120); and driving the piston (210) to move towards the direction close to the cylinder bottom so as to discharge the air in the cavity through the first one-way valve (110).
In the embodiment, the manual negative pressure pump for the ligation device has a simple structure, can be manually operated, and reduces the cost; by the aid of the first check valve and the second check valve which are respectively arranged on the cylinder body 100 and the piston 210, when the piston (210) is driven to move towards a direction far away from the cylinder bottom, the stroke of the piston 210 can be used for generating negative pressure, and the negative pressure generating efficiency is improved.
In an application scenario, the inner tube is communicated with the socket 220 through an air tube, when the driving piston (210) moves towards a direction far away from the bottom of the cylinder, air in the inner tube enters the push rod 200 through the socket 220 and enters a cavity surrounded by the piston 210 and the cylinder 100 through the second one-way valve 120, so that negative pressure is generated in the inner tube, and a focus is sucked into the head end of the inner tube.
As shown in fig. 2, optionally, the manual negative pressure pump for the ligation device further comprises a driving mechanism 300; and the driving mechanism (300) is suitable for driving the piston (210) to move towards the direction away from the cylinder bottom or away from the cylinder bottom.
As a preferred embodiment of this embodiment, the drive mechanism (300) includes: a trigger member (310) and a resilient member (320) sleeved on the push rod (200); wherein the wrench part (310) comprises a wrench part (311), a rotating shaft part (312) and a driving part (313) which are connected in sequence; the driving part (313) is connected with the push rod (200); the driving part (313) rotates around the rotating shaft part (312) so as to drive the piston (210) to move towards the direction far away from the cylinder bottom through the push rod (200), and the piston (210) extrudes the rebound piece (320); and the release trigger part (311), and the rebound piece (320) is suitable for driving the piston (210) to move towards the direction close to the cylinder bottom.
In this embodiment, the driving mechanism 300 is generally installed inside the casing of the ligation device, one end of the resilient member 320 abuts against the piston 210, the other end of the resilient member 320 can abut against a stop block inside the casing of the ligation device, and the resilient member 320 can be, but is not limited to, a spring; the shaft portion 312 may be fixed inside the casing of the ligation device.
In one application scenario, in the initial state, the resilient member 320 presses the piston 210 against the bottom of the barrel; the buckling part 311 is buckled and pressed, the piston 210 is driven to extrude the rebound piece 320 by utilizing the lever principle, gas in the inner tube of the ligation device enters a cavity formed by the piston (210) and the cylinder body (100), so that negative pressure is generated in the inner tube, and a focus is sucked into the head end of the inner tube; the pulling part 311 is released, the rebound piece 320 can reset the piston (210) and enter the next circulation; the driving mechanism 300 of the embodiment has simple structure, convenient operation and lower cost; the length of the cylinder body can be fully utilized, so that the stroke of the piston (210) moving towards the direction far away from the cylinder bottom can be used for generating negative pressure, the efficiency is improved, and the piston (210) does not need to be worked by a human body in the resetting process, so that the labor is saved and the convenience is realized; the piston (210) can exhaust air in a cavity formed by the piston (210) and the cylinder (100) in the resetting process, and the utilization rate of the length of the cylinder is further improved.
As shown in fig. 3, as an alternative assembly manner of the driving part 313 and the end part of the push rod 200, the other end of the push rod (200) is provided with a long chute (230); the driving part (313) is provided with a U-shaped notch (314); the other end of the push rod (200) is suitable for extending into the U-shaped notch (314) so that a limiting rod (315) penetrates through the sliding groove (230) through the opening end of the U-shaped notch (314); when the driving part (313) rotates around the rotating shaft part (312), the push rod (200) is driven to move through the limiting rod (315).
In this embodiment, the U-shaped notch 314 may improve the compactness of the assembly, reducing the overall volume of the ligation device; the limiting rod (315) can facilitate the disassembly and assembly of the push rod (200) and the driving part (313).
As an alternative embodiment of the plunger 210, as shown in fig. 1, the plunger 210 includes a mounting seat 211 disposed on the push rod 200 and a sealing member 212 disposed on the mounting seat 211; the second check valve 120 is arranged on the mounting seat 211; and the sealing member 212 is provided with a vent hole 213 communicating with the second check valve 120.
In this embodiment, air in the push rod 200 can enter the cavity enclosed by the piston 210 and the cylinder 100 through the second check valve 120 and the vent hole 213 on the sealing member 212.
In order to facilitate the installation of the manual negative pressure pump for the ligation device on the ligation device, a clamping groove 130 for installation is arranged on the side wall of the cylinder 100; the inner side of the casing of the ligation device can be provided with a limiting block which is clamped into the clamping groove 130 so as to fix the ligation device by using the manual negative pressure pump.
Example 2
On the basis of embodiment 1, as shown in fig. 4, this embodiment provides a ligation device, including: an inner tube 400 for sucking a lesion; the ligation device described in example 1 was used with a manual negative pressure pump; one end of the air pipe 500 is sleeved on the sleeve joint 220 of the push rod 200, and the other end of the air pipe is communicated with the inner pipe 400; when the end of the inner tube 400 is pressed against the lesion, the ligation device is adapted to generate negative pressure in the inner tube using a manual negative pressure pump to suck the lesion.
In conclusion, the manual negative pressure pump for the ligation device has a simple structure, can be manually operated, and reduces the cost; when the piston (210) is driven to move towards a direction far away from the cylinder bottom, the stroke of the piston 210 can be used for generating negative pressure through the first one-way valve and the second one-way valve which are respectively arranged on the cylinder body 100 and the piston 210, so that the negative pressure generating efficiency is improved; the trigger part 311 is buckled and pressed, the piston 210 is driven by utilizing the lever principle to extrude the rebound piece 320, so that negative pressure is generated in the inner tube, and the focus is sucked into the head end of the inner tube; the pulling part 311 is released, the piston can be reset by the rebound piece 320, and the next cycle is started; the driving mechanism 300 of the embodiment has simple structure, convenient operation and lower cost; the U-shaped notch 314 can improve the assembly compactness and reduce the overall volume of the ligation device;
the components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a loop ligature utensils manual negative pressure pump which characterized in that includes:
a cylinder body (100) provided with an opening, wherein the cylinder bottom of the cylinder body is provided with a first one-way valve (110);
a hollow push rod (200), one end of which is provided with a piston (210) which is suitable for extending into the cylinder body (100) and is attached to the inner wall of the cylinder body to move, and the other end of which is provided with a socket (220) for being sleeved with an air pipe; wherein
The piston (210) is provided with a second one-way valve (120);
the piston (210) is driven to move towards the direction far away from the cylinder bottom, so that external air is sucked into the push rod (200) through the socket (220) and then enters a cavity formed by the piston (210) and the cylinder body (100) through the second one-way valve (120); and
the piston (210) is driven to move towards the direction close to the bottom of the cylinder, so that air in the cavity is exhausted through the first one-way valve (110).
2. The manual negative pressure pump for a ligation device according to claim 1,
the manual negative pressure pump for the ligation device further comprises: a drive mechanism (300); wherein
The driving mechanism (300) is suitable for driving the piston (210) to move towards the direction close to or away from the cylinder bottom.
3. The manual negative pressure pump for a ligation device according to claim 2,
the drive mechanism (300) comprises: a trigger member (310) and a resilient member (320) sleeved on the push rod (200); wherein
The wrench part (310) comprises a wrench part (311), a rotating shaft part (312) and a driving part (313) which are connected in sequence;
the driving part (313) is connected with the push rod (200); and
the trigger part (311) is buckled, so that the driving part (313) rotates around the rotating shaft part (312), the push rod (200) is driven to drive the piston (210) to move towards the direction far away from the cylinder bottom, and the piston (210) extrudes the resilient piece (320); and
and (3) releasing the trigger part (311), wherein the resilient piece (320) is suitable for driving the piston (210) to move towards the direction close to the cylinder bottom, and the driving part (313) rotates around the rotating shaft part (312) to reset.
4. The manual negative pressure pump for a ligation device according to claim 3,
the other end of the push rod (200) is provided with a long sliding chute (230);
the driving part (313) is provided with a U-shaped notch (314);
the other end of the push rod (200) is suitable for extending into the U-shaped notch (314) so that a limiting rod (315) penetrates through the sliding groove (230) through the opening end of the U-shaped notch (314);
when the driving part (313) rotates around the rotating shaft part (312), the push rod (200) is driven to move through the limiting rod (315).
5. The manual negative pressure pump for a ligation device according to claim 1,
the piston (210) comprises a mounting seat (211) arranged on the push rod and a sealing element (212) sleeved on the mounting seat (211);
the second one-way valve (120) is arranged on the mounting seat (211); and
and a vent hole (213) communicated with the second one-way valve (120) is formed in the sealing element (212).
6. The manual negative pressure pump for a ligation device according to claim 1,
the side wall of the cylinder body (100) is provided with a clamping groove (130) for installation.
7. A ligation device, comprising:
an inner tube (400) for aspirating a lesion;
the ligation device according to any of claims 1 to 6, further comprising a manual negative pressure pump; and
one end of the air pipe (500) is sleeved on the sleeve joint (220) of the push rod (200), and the other end of the air pipe is communicated with the inner pipe (400);
when the end of the inner tube (400) is pressed against the focus, the ligation device is suitable for generating negative pressure in the inner tube by using a manual negative pressure pump so as to suck the focus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120209939.4U CN214907546U (en) | 2021-01-25 | 2021-01-25 | Manual negative pressure pump for ligation device and ligation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120209939.4U CN214907546U (en) | 2021-01-25 | 2021-01-25 | Manual negative pressure pump for ligation device and ligation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214907546U true CN214907546U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120209939.4U Active CN214907546U (en) | 2021-01-25 | 2021-01-25 | Manual negative pressure pump for ligation device and ligation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214907546U (en) |
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2021
- 2021-01-25 CN CN202120209939.4U patent/CN214907546U/en active Active
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