Endoscopic tissue fluid collecting and dosing device

Abstract

An operation sleeve is provided with a through sliding hole, a sliding rod is fixed to the end of an operation handle, the sliding rod is connected into the sliding hole in a sliding mode, a plurality of clamping holes are formed in the outer side wall of the sliding hole, and the clamping holes are connected with the sliding rod in a sliding mode. A clamping protrusion is arranged on the outer side wall of the free end, located in the sliding hole, of the sliding rod in a protruding mode, the clamping protrusion can be clamped in any clamping hole, an inner pipe is fixed to the end, located in the sliding hole, of the sliding rod, an outer pipe is fixed to the end of the operation sleeve, the outer pipe is arranged on the peripheral side of the inner pipe in a sleeving mode, and a plurality of liquid changing holes are formed in the free end of the inner pipe. By means of the multiple liquid changing holes formed in the free end of the inner tube, when the inner tube extends out of the outer tube, the liquid changing efficiency of tissue liquid collection or dosing can be improved through the multiple liquid changing holes, and the operation efficiency is remarkably improved; by arranging the multiple clamping holes, the length of the inner pipe extending out of the outer pipe can be adjusted, and the requirements of different use occasions are met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and in particular to a device for collecting and dosing tissue fluid under laparoscope. Background Art

[0002] Physiological or pathological tissue fluids such as digestive fluid and peritoneal effusion contain a large amount of biological information, such as proteins, metabolites, nucleic acids, etc. Collecting tissue fluid for biological analysis is of great significance for disease prevention, diagnosis, treatment and prognosis evaluation.

[0003] The existing laparoscopic tissue fluid collection and dosing devices have the following disadvantages:

[0004] 1. The aperture of the liquid outlet tube is small, and the flow rate of inflow and outflow is small during the collection and addition of tissue fluid, which seriously affects the efficiency of the operation;

[0005] 2. The extension length of the liquid outlet pipe has few adjustment levels, which cannot meet the different length adjustment requirements of different usage occasions. Utility Model Content

[0006] To this end, the utility model provides a device for collecting and administering tissue fluid under laparoscope to solve the above-mentioned problems in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] According to the first aspect of the utility model, a laparoscopic tissue fluid collection and dosing device comprises an operating handle, a sliding rod, a snap-on protrusion, an operating sleeve, an inner tube and an outer tube; the operating sleeve is provided with a penetrating sliding hole, the end of the operating handle is fixed with the sliding rod, the sliding rod is slidably connected in the sliding hole, the outer wall of the sliding hole is provided with a plurality of snap-on holes, the outer wall of the free end of the sliding rod located in the sliding hole is protrudingly provided with the snap-on protrusion, the snap-on protrusion can be snapped into any one of the snap-on holes, the inner tube is fixed to one end of the sliding rod located in the sliding hole, the outer tube is fixed to the end of the operating sleeve, the outer tube is sleeved on the outer peripheral side of the inner tube, and the free end of the inner tube is provided with a plurality of fluid exchange holes.

[0009] Furthermore, the inner tube and the outer tube are both transparent tubes, and the hardness of the outer tube is greater than that of the inner tube.

[0010] Furthermore, the plurality of fluid exchange holes are distributed in a spiral shape around the outer side wall of the inner tube.

[0011] Furthermore, it also includes a threaded connection port, and the end of the operating handle away from the sliding rod is provided with the threaded connection port, and the threaded connection port has a through hole connected to the inner tube.

[0012] Furthermore, it also includes a metal guide wire, which can pass through the through hole and extend into the inner tube.

[0013] Furthermore, two edges of the locking protrusion along the sliding direction thereof are respectively provided with an inclined first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are inclined in opposite directions.

[0014] Furthermore, it also includes an elastic notch, the sliding rod is provided with the elastic notch inside the position where the clamping protrusion is located, the inner tube is inserted into the elastic notch, and the elastic notch is a U-shaped notch.

[0015] Furthermore, the sliding hole is a circular hole, the inner side wall of the sliding hole is provided with an inner hole section, the sliding rod is a circular rod, the outer side wall of the sliding rod is provided with a cutting plane, and the cutting plane is matched with the inner hole section.

[0016] Furthermore, the outer surface of the operating handle is provided with anti-slip protrusions.

[0017] Furthermore, the number of the clamping holes is ≥3, and the plurality of clamping holes are evenly spaced along the length direction of the operating sleeve.

[0018] The utility model has the following advantages:

[0019] 1. By setting a plurality of fluid exchange holes at the free end of the inner tube, when the inner tube extends out of the outer tube, the fluid exchange efficiency of tissue fluid collection or drug addition can be increased through the plurality of fluid exchange holes, which significantly improves the surgical efficiency;

[0020] 2. By setting a plurality of clamping holes, the length of the inner tube extending out of the outer tube can be adjusted to meet the needs of different use occasions;

[0021] 3. The outer sleeve can also prevent contamination, because the endoscopic biopsy channel is usually not sterile, but after the device is sterilized, the inner sleeve can be sterile;

[0022] 4. The device can also be used to deliver drugs locally to the lesion, thus avoiding the problem of two-way contamination between the endoscope channel and the drug. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A cross-sectional view of a laparoscopic tissue fluid collection and administration device provided in some embodiments of the utility model.

[0024] Figure 2 A schematic diagram of the outer surface of a laparoscopic tissue fluid collection and drug delivery device provided in some embodiments of the utility model.

[0025] Figure 3A stereoscopic diagram of a device for collecting and administering tissue fluid under laparoscope provided in some embodiments of the utility model.

[0026] Figure 4 A top view of a laparoscopic tissue fluid collection and administration device provided in some embodiments of the utility model.

[0027] Figure 5 A partial cross-sectional view of a laparoscopic tissue fluid collection and administration device provided in some embodiments of the utility model.

[0028] Figure 6 A schematic diagram of the use of a laparoscopic tissue fluid collection and administration device provided in some embodiments of the utility model.

[0029] In the figure: 1. operating handle, 2. sliding rod, 3. threaded connection port, 4. snap-on protrusion, 5. operating sleeve, 6. sliding hole, 7. snap-on hole, 8. inner tube, 9. outer tube, 10. fluid exchange hole, 11. inner hole section, 12. first inclined plane, 13. second inclined plane, 14. elastic notch, 15. metal guide wire, 16. stenosis segment, 17. lesion cavity or physiological cavity distal to the stenosis segment. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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.

[0031] Example 1

[0032] like Figures 1 to 5 As shown, a laparoscopic tissue fluid collection and dosing device in the embodiment of the first aspect of the utility model comprises an operating handle 1, a sliding rod 2, a snap-on protrusion 4, an operating sleeve 5, an inner tube 8 and an outer tube 9; the operating sleeve 5 is provided with a penetrating sliding hole 6, the end of the operating handle 1 is fixed with a sliding rod 2, the sliding rod 2 is slidably connected in the sliding hole 6, the outer side wall of the sliding hole 6 is provided with a plurality of snap-on holes 7, the outer side wall of the free end of the sliding rod 2 located in the sliding hole 6 is protruding with a snap-on protrusion 4, the snap-on protrusion 4 can be snapped into any one of the snap-on holes 7, the end of the sliding rod 2 located in the sliding hole 6 is fixed with an inner tube 8, the end of the operating sleeve 5 is fixed with an outer tube 9, the outer tube 9 is sleeved on the outer peripheral side of the inner tube 8, and the free end of the inner tube 8 is provided with a plurality of fluid exchange holes 10.

[0033] In the above embodiment, it should be noted that when in use, the inner tube 8 is driven to reciprocate and telescope in the outer tube 9 by pulling the operating handle 1. According to the actual requirement of the extension length of the inner tube 8, the clamping protrusion 4 on the operating handle 1 is adjusted to clamp in one of the clamping holes 7. The tissue fluid during the tissue fluid collection operation and the medicinal solution during the administration of the drug are exchanged with the human tissue through the fluid exchange hole 10 at the front end of the inner tube 8.

[0034] The technical effect achieved by the above embodiments is as follows: by providing multiple fluid exchange holes at the free end of the inner tube, when the inner tube extends out of the outer tube, the multiple fluid exchange holes can be used to increase the fluid exchange efficiency of tissue fluid collection or drug addition, thereby significantly improving the surgical efficiency; by providing multiple clamping holes, the length of the inner tube extending out of the outer tube can be adjusted, thereby meeting the needs of different usage scenarios.

[0035] Example 2

[0036] like Figures 1 to 5 As shown, a laparoscopic tissue fluid collection and drug administration device includes all the contents of Example 1. In addition, both the inner tube 8 and the outer tube 9 are transparent tubes, and the hardness of the outer tube 9 is greater than that of the inner tube 8; the outer tube 9 is slightly hard to play a supporting role, and the inner tube 8 is relatively soft to prevent scratching the mucosa.

[0037] Optionally, a plurality of fluid exchange holes 10 are distributed in a spiral shape around the outer wall of the inner tube 8 .

[0038] The technical effects achieved by the above embodiment are as follows: by setting both the inner tube 8 and the outer tube 9 as transparent tubes, observation is facilitated; by setting the fluid exchange holes 10 to a spirally distributed structure, the fluid exchange efficiency is ensured while greatly ensuring the strength of the end of the inner tube 8.

[0039] Example 3

[0040] like Figures 1 to 5 As shown, a laparoscopic tissue fluid collection and dosing device includes all the contents of Example 2, and in addition, also includes a threaded connection port 3. The end of the operating handle 1 away from the sliding rod 2 is provided with a threaded connection port 3, and the threaded connection port 3 has a through hole connected to the inner tube 8.

[0041] Optionally, a metal guide wire 15 is also included. The metal guide wire 15 can pass through the through hole and extend into the inner tube 8. Specifically, for example, the diameter of the endoscope is about 1 cm, and there is a narrow section with a diameter of only 0.5 cm. At this time, under the guidance of the endoscope, the metal guide wire 15 is first sent over, and then the sheath is sent in along the tail of the metal guide wire 15, so that the narrow section 16 can be passed, and medication or sampling can be carried out behind the narrow part.

[0042] Figure 6The narrowed portion shown can be understood as the opening of the lesion cavity. In the figure, the lesion cavity is simplified to a blind end. In fact, it can also be the digestive tract. For example, if the esophagus is narrowed but there is still a lesion in the stomach, we can use this tube to cross the narrowed portion of the esophagus to achieve intragastric drug administration or sampling. In addition, in the human body, from top to bottom, there are the esophagus, stomach, and intestine. Similarly, if the outlet of the stomach is narrowed, we can also cross the narrowed portion to administer drugs to the intestine or collect intestinal fluid. It should be noted that the number 17 in the figure is the lesion cavity or physiological cavity at the distal end of the narrow segment.

[0043] The technical effect achieved by the above embodiment is: by setting the threaded connection port 3, the connection between the device and other medical devices is realized; by setting the metal guide wire 15, surgical operations with different requirements are realized. The metal guide wire 15 also has another function of instrument replacement. For example, if there is a narrow section and the endoscope cannot pass through, but the guide wire can pass through, and then the tube can be guided through the guide wire to realize tissue fluid collection and drug administration.

[0044] Example 4

[0045] like Figures 1 to 5 As shown, a laparoscopic tissue fluid collection and dosing device includes all the contents of Example 3. In addition, the two edges of the snap-in protrusion 4 along its sliding direction are respectively provided with an inclined first bevel 12 and a second bevel 13, and the first bevel 12 and the second bevel 13 are inclined in opposite directions.

[0046] Optionally, an elastic notch 14 is further included. The sliding rod 2 is provided with an elastic notch 14 inside the position where the clamping protrusion 4 is located. The inner tube 8 is inserted into the elastic notch 14. The elastic notch 14 is a U-shaped notch.

[0047] The technical effect achieved by the above embodiment is as follows: by setting the first inclined surface 12 and the second inclined surface 13, a good guiding effect is achieved, thereby ensuring the smoothness of the bidirectional movement of the snap-in protrusion 4; by setting the elastic notch 14, the effective rebound of the snap-in protrusion 4 in the snap-in hole 7 is effectively achieved, thereby ensuring that the snap-in protrusion 7 can be effectively snap-into the snap-in hole 7 and can also easily achieve the detachment and switching from the snap-in hole 7.

[0048] Example 5

[0049] like Figures 1 to 5 As shown, a laparoscopic tissue fluid collection and dosing device includes all the contents of Example 4. In addition, the sliding hole 6 is a circular hole, the inner wall of the sliding hole 6 is provided with an inner hole section 11, the sliding rod 2 is a circular rod, and the outer wall of the sliding rod 2 is provided with a cutting plane, and the cutting plane is adapted to the inner hole section 11.

[0050] Optionally, the outer surface of the operating handle 1 is provided with anti-slip protrusions.

[0051] Optionally, the number of the clamping holes 7 is ≥3, the multiple clamping holes 7 are evenly spaced along the length direction of the operating sleeve 5 , and scale values ​​are set on the sides of the multiple clamping holes 7 .

[0052] The technical effects achieved by the above embodiments are as follows: by setting the cutting plane to match the inner hole cutting plane 11, the rotation phenomenon generated during the sliding process of the sliding rod 2 is effectively avoided, thereby ensuring the operation accuracy; by setting the anti-slip protrusion, the anti-slip performance of the operation is improved; by setting the number of the clamping holes 7 ≥ 3, multi-level adjustment of the extension length of the inner tube 8 is achieved, meeting different usage scenarios; by setting the scale values ​​next to the multiple clamping holes 7, the precision of the adjustment process of the extension length of the inner tube 8 is achieved.

[0053] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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, and do not indicate or imply 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 a limitation on the present invention.

[0054] 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0058] In the description of this specification, the description with reference to the terms "embodiment one", "embodiment two", "example", "specific example", or "some examples" means that the specific method, device or feature described in conjunction with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, methods, devices or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for collecting and administering tissue fluid under laparoscopy, characterized in that: The invention comprises an operating handle (1), a sliding rod (2), a snap-on protrusion (4), an operating sleeve (5), an inner tube (8) and an outer tube (9); the operating sleeve (5) is provided with a penetrating sliding hole (6); the sliding rod (2) is fixed at the end of the operating handle (1); the sliding rod (2) is slidably connected in the sliding hole (6); a plurality of snap-on holes (7) are provided on the outer wall of the sliding hole (6); the snap-on protrusion (4) is protruding from the outer wall of the free end of the sliding rod (2) located in the sliding hole (6); the snap-on protrusion (4) can be snap-on in any one of the snap-on holes (7); the inner tube (8) is fixed at one end of the sliding rod (2) located in the sliding hole (6); the outer tube (9) is fixed at the end of the operating sleeve (5); the outer tube (9) is sleeved on the outer peripheral side of the inner tube (8); and a plurality of fluid exchange holes (10) are provided at the free end of the inner tube (8).

2. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: The inner tube (8) and the outer tube (9) are both transparent tubes, and the hardness of the outer tube (9) is greater than the hardness of the inner tube (8).

3. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: The plurality of fluid exchange holes (10) are distributed in a spiral shape around the outer wall of the inner tube (8).

4. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: It also comprises a threaded connection port (3), and the end of the operating handle (1) facing away from the sliding rod (2) is provided with the threaded connection port (3), and the threaded connection port (3) has a through hole connected to the inner tube (8).

5. The device for collecting and administering tissue fluid under laparoscopy according to claim 4, characterized in that: It also comprises a metal guide wire (15), and the metal guide wire (15) can pass through the through hole and extend into the inner tube (8).

6. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: The two edges of the clamping protrusion (4) along the sliding direction thereof are respectively provided with an inclined first inclined surface (12) and a second inclined surface (13), and the first inclined surface (12) and the second inclined surface (13) are inclined in opposite directions.

7. The device for collecting and administering tissue fluid under laparoscopy according to claim 6, characterized in that: It also includes an elastic notch (14). The elastic notch (14) is opened inside the sliding rod (2) where the clamping protrusion (4) is provided. The inner tube (8) is inserted into the elastic notch (14). The elastic notch (14) is a U-shaped notch.

8. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: The sliding hole (6) is a circular hole, and the inner wall of the sliding hole (6) is provided with an inner hole section (11); the sliding rod (2) is a circular rod, and the outer wall of the sliding rod (2) is provided with a section plane, and the section plane is adapted to the inner hole section (11).

9. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: The outer surface of the operating handle (1) is provided with anti-slip protrusions.

10. The device for collecting and administering tissue fluid under laparoscopy according to claim 1, characterized in that: The number of the clamping holes (7) is ≥3, and the plurality of clamping holes (7) are evenly spaced along the length direction of the operating sleeve (5).

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