WO2021077781A1

WO2021077781A1 - Rotatable spatula used under endoscope

Info

Publication number: WO2021077781A1
Application number: PCT/CN2020/097413
Authority: WO
Inventors: 雷达; 赵秋
Original assignee: 安瑞医疗器械(杭州)有限公司
Priority date: 2019-10-25
Filing date: 2020-06-22
Publication date: 2021-04-29
Also published as: CN110638487A

Abstract

A rotatable spatula (31) used under an endoscope, comprising a first handle (11) and a sliding handle (12) slidably provided on the first handle (11). A sheath tube (15) is provided at the front end of the first handle (11); a core shaft (13) penetrates through the sheath tube (15) and can move forwards and backwards in the sheath tube (15); one end of the core shaft (13) is connected to the sliding handle (12), and the other end of the core shaft (13) is fixed with the spatula (31); by moving the sliding handle (12) forwards and backwards, the spatula (31) is driven to extend out of and retract from the front end of the sheath tube (15). The sliding handle (12) is pushed and pulled to drive the core shaft (13) to move forwards and backwards; the core shaft (13) drives the spatula (31) to move forwards and backwards so as to scrape gastric juice; after the spatula (31) scrapes gastric juice, the sliding handle (12) is pulled to move backwards so as to make the spatula (31) extend into the sheath tube (15); the inner wall of the sheath tube (15) may play a certain role in sealing the gastric juice in the spatula (31), so that the gastric juice in the spatula (31) is prevented from leaking and flowing into a digestive tract, thereby realizing the functions of extracting gastric antrum and gastric juice on a gastric body under the endoscope, and collecting the gastric juice and a tissue.

Description

Rotatable spatula used under endoscope

Technical field

The invention relates to medical surgical instruments under an endoscope, and more specifically, it relates to a rotatable spatula used under an endoscope.

Background technique

my country is one of the countries with a high incidence of peptic ulcers. Helicobacter pylori (Hp) is a factor that causes peptic ulcers. It is a kind of gram-negative Helicobacter that parasitizes human gastric mucosa and is related to many gastrointestinal diseases. , And has a certain degree of contagion.

The current methods for detecting Helicobacter pylori include gastric biopsy mucosal smear, tissue section staining, bacterial culture, C13/C14 urea breath test, polymerase chain reaction (PCR) technology, etc. The first three methods are all through endoscopy Taking samples of gastric antrum and gastric body tissue, while taking samples of gastric antrum and gastric body tissue, will be accompanied by bleeding, which is a problem for both the patient and the operator. At present, the internationally recognized "gold standard" for Helicobacter pylori examination is the C13/C14 urea breath test. The principle is to take advantage of the highly active urease of Helicobacter pylori. Subjects oral 13C or 14C mark The urea can be decomposed by it, and the CO2 produced is expelled through exhalation. By measuring the change of the labeled CO2 in the exhaled gas, it can be judged whether there is Helicobacter pylori infection. The detection method is indirect. If the subject has taken acid suppressants or antibiotics before, the test results will be falsely negative. In addition, the method is to judge whether it is positive by the cutoff value, that is, HP ≤ 100 is negative,> 100 is positive, if the measured value is less than 100, the report will show negative, and for the average subject, the HP value is not known. Meaning, only knows whether it is masculine or feminine, if you see it is feminine, everything will be fine. For negative subjects, hospitals generally do not prescribe drugs, and subjects do not pay attention to it, which will artificially cause the further reproduction of HP and even the deterioration of various gastric lesions. This is the reason why "the last test was still negative, why did the test become so high after half a year" that often appears, and this is also one of the drawbacks and hidden dangers of the urea breath test to measure HP. Another method to detect HP is polymerase chain reaction (PCR). The polymerase chain reaction (PCR) method is a method that uses molecular biology technology to non-invasively diagnose Helicobacter pylori infection with strong specificity. High sensitivity and other advantages, it can detect as few as 100 bacteria, Helicobacter pylori, which is difficult to cultivate, and Helicobacter pylori in saliva and gastric juice specimens; because only a small amount of DNA is required and no live bacteria are required, it can detect outside the stomach Sites such as dental plaque, feces and Helicobacter pylori in the environment can be used to identify recurrent reinfections through DNA sequence analysis; it can also be used to study Helicobacter pylori pathogenic genes and further explore its pathogenesis. This technology is used to detect Helicobacter pylori in saliva with a high detection rate. If it is used to detect gastric juice and gastric mucosa, it is necessary to enter the body through a gastroscope for tissue and gastric juice extraction equipment. At present, domestic and foreign devices have not yet found a dedicated device for this technology, and the lack of a dedicated device greatly limits the promotion of this technology. Therefore, it is urgent to design a device that can be used under an endoscope and that can extract gastric juice and tissue.

technical problem

In view of the shortcomings of the prior art, the present invention is to provide a rotatable spatula used under an endoscope. The spatula can extract and extract gastric juice on the antrum and gastric body under the endoscope and collect gastric juice and tissues.

Technical solutions

In order to achieve the above object, the present invention provides the following technical solution: a rotatable spatula used under an endoscope, comprising a first handle and a sliding handle slidably arranged on the first handle, and a sheath is provided at the front end of the first handle , A mandrel passes through the sheath, and the mandrel can move back and forth in the sheath. One end of the mandrel is connected with the sliding handle, and the other end of the mandrel is fixed with a scraper. The sliding handle is moved back and forth to drive the scraper from The front end of the sheath is extended and retracted. Push and pull the sliding handle to drive the mandrel to move back and forth. The mandrel drives the spatula to move back and forth to scrape the gastric juice. After the spatula scrapes the gastric juice, pull the sliding handle to move backwards to make the spatula extend into the sheath, and the inner wall of the sheath can face the spatula The gastric juice in the spatula has a certain sealing effect to prevent the gastric juice in the spatula from leaking and flowing into the digestive tract.

Preferably, a runner is further provided between the first handle and the sheath tube, the runner is rotatably arranged at the front end of the first handle, and the sheath tube is inserted into the runner and is axially constrained; the mandrel Through the runner, the runner can drive the mandrel to rotate, and the mandrel can move back and forth in the runner, and the mandrel and the scraper are driven to rotate by rotating the runner. A runner is arranged between the first handle and the sheath. The rotating wheel drives the mandrel to rotate, the mandrel rotates to drive the scraper to rotate, the push-pull sliding handle drives the mandrel to move forward and backward, and the mandrel drives the scraper to move forward and backward to scrape. Gastric juice, after scraping the gastric juice with the spatula, pull the sliding handle to move backward to make the spatula extend into the sheath to reduce the leakage of gastric juice from the spatula.

Preferably, the runner has a step hole, the step hole includes at least a first step and a second step, the outer diameter of the first step is smaller than the outer diameter of the second step, the first step is located in front of the second step, The step hole of the wheel is provided with a buckle and a sheath tube fixing tube. The rear end of the sheath tube penetrates into the step hole and is fixedly connected with the sheath tube fixing tube. The sheath tube fixing tube is axially forward and backward by the first step and the buckle. Limiting, the mandrel penetrates through the buckle and the two are connected in a circumferential limit and an axial non-limiting manner to transmit rotation and relative movement back and forth, the buckle is connected to the runner with a circumferential limit The transmission of rotation is realized. In this way, the rotating wheel drives the mandrel to rotate through the buckle, and the buckle is limited between the front end of the first handle and the second step. In this way, the connecting structure of the first handle, the sheath tube and the runner is simple and reasonable, and the assembly is convenient. The runner can not only rotate relative to the first handle and the sheath, but also the runner can drive the mandrel to rotate.

Preferably, the runner and the buckle are fixedly connected.

Preferably, the sheath tube has a limiting portion and a connecting portion, the limiting portion is axially limited by the first step and the buckle, and the rear end of the sheath is sleeved on the connecting portion and fixed .

Preferably, the runner is sleeved on the front end of the first handle and is axially limited by a convex ring.

Preferably, the mandrel is a steel wire, the rear end of the mandrel is sleeved with a conduit, and the conduit and the mandrel are flat and crimped and fixed, the conduit passes through the buckle, and the buckle is provided with a fitting that matches the conduit. The flat hole so that the buckle can drive the catheter and the mandrel to rotate. The transmission performance of the steel wire is better, and the steel wire can drive the spatula to achieve better synchronization, improve the adjustment efficiency of the rotation angle, and thereby shorten the operation time to avoid the trouble of bleeding.

Preferably, the sheath tube is a transparent sheath tube, and a plurality of rotating protrusions are provided on the circumference of the rotating wheel. The transparent sheath is convenient for the operator to observe whether the gastric juice is scraped from the spatula, and the setting of the rotating protruding strip is convenient for the operator to rotate the wheel.

Preferably, the spatula includes a spatula body, the middle of the spatula body is recessed inward to form a cavity for containing gastric juice, and the end of the spatula body away from the mandrel extends toward the inner side wall of the sheath. There is a blocking plate part, and side blocking plate parts are respectively extended on the left and right sides of the spatula body. After the spatula is extended into the sheath tube, the inner side wall of the sheath tube and the blocking plate on the spatula cooperate to seal the gastric juice in the spatula, preventing the gastric juice in the spatula from leaking out and flowing into the digestive tract.

Preferably, an interference fit between the blocking plate portion and the tube hole of the sheath tube is used to close the tube opening.

Beneficial effect

In summary, the present invention has the following beneficial effects: the spatula can extract the gastric juice from the antrum and the stomach body and collect the gastric juice and tissues under the endoscope. The first handle is provided with a rotating wheel, and the rotating wheel drives the connection The steel wire and the spatula rotate, push and pull the sliding handle to allow the spatula to move back and forth to scrape gastric juice; a wire with good transmission performance is used to connect the spatula and the sliding handle, so that the steel wire drives the spatula to achieve better synchronization and improve the efficiency of adjusting the rotation angle. , Thereby shortening the operation time and avoiding the trouble of bleeding; at the same time, in order to ensure that the gastric juice can be extracted, the spatula can be retracted into the sheath, and the inner wall of the sheath can seal the gastric juice in the spatula to a certain extent, avoiding the spatula The gastric juice inside leaks out and flows into the digestive tract.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a partial cross-sectional view of the connecting part of the runner and the first handle of the present invention;

Figure 3 is a top view of the sheath tube, connecting tube and spatula connection of the present invention;

Figure 4 is a front view of the sheath tube, connecting tube and spatula connection of the present invention;

Figure 5 is a schematic structural view of the spatula of the present invention extending into the sheath;

Figure 6 is a cross-sectional view of the spatula of the present invention extending into the sheath;

Figure 7 is a schematic diagram of the structure of the spatula of the present invention extending into the sheath after scraping gastric juice.

Reference signs: 11, first handle; 12, sliding handle; 13, mandrel; 14, catheter; 15, sheath; 21, runner; 22, buckle; 23, sheath fixing tube; 31, spatula 32, connecting pipe; 33, blocking part; 34, side blocking plate part.

Embodiments of the present invention

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

This embodiment discloses a rotatable spatula used under an endoscope. As shown in Figures 1 and 2, it includes a first handle 11 and a sliding handle 12 slidably arranged on the first handle 11. The first handle 11 is The ring-shaped handle is convenient for the operator to push and pull the sliding handle 12 with one hand. A sheath 15 is provided at the front end of the first handle 11, and the first handle 11 and the sheath 15 are clamped or fixedly connected, and a mandrel 13 penetrates through the sheath 15 , And the mandrel 13 can move back and forth in the sheath 15. One end of the mandrel 13 is connected to the sliding handle 12, and the other end of the mandrel 13 is fixed with a scraper 31. By moving the sliding handle 12 back and forth to drive the scraper 31 from the sheath The front end of the tube 15 extends and retracts.

A runner is also arranged between the first handle 11 and the sheath tube 15. The runner 21 is rotatably arranged at the front end of the first handle 11, the sheath tube 15 is inserted into the runner 21 and is axially limited, and the mandrel 13 passes through the runner. 21. The runner 21 can drive the mandrel 13 to rotate, and the mandrel 13 can move back and forth in the runner 21. By rotating the runner 21, the mandrel 13 and the scraper 31 are driven to rotate. A runner 21 is provided between the first handle 11 and the sheath tube 15. By rotating the runner 21, the mandrel 13 is driven to rotate, the mandrel 13 rotates to drive the scraper 31 to rotate, and the sliding handle 12 drives the mandrel 13 to move back and forth. The shaft 13 drives the spatula 31 to move back and forth to scrape the gastric juice. After the spatula 31 scrapes the gastric juice, pull the sliding handle 12 to move backwards to make the spatula 31 extend into the sheath 15 to reduce the leakage of gastric juice from the spatula 31. In addition, The rotating wheel 21 can drive the scraper 31 to rotate 360° in a forward or reverse direction, and the user can complete the rotation of the scraper 31 with one hand. While pushing and pulling the sliding handle 12 to move the scraper 31 synchronously, it can also rotate at the same time. The rotating wheel 21 drives the scraper 31 to rotate 360° in a forward or reverse direction. This operation requires the operator to complete the operation with both hands. Preferably, the mandrel 13 is a steel wire. The transmission performance of the steel wire is better, and the steel wire can drive the spatula 31 to achieve better synchronization, improve the adjustment efficiency of the rotation angle, and thereby shorten the operation time to avoid the trouble of bleeding.

As shown in Figures 3 to 7, the spatula 31 includes a spatula body. The middle of the spatula body is recessed inward to form a cavity for containing gastric juice. The end of the spatula body away from the mandrel 13 faces the inner wall of the sheath 15 A blocking plate portion 33 extends in the direction, and at the same time, side blocking plate portions 34 are respectively extended on the left and right sides of the spatula body. The spatula 31 is connected to the mandrel 13 through the connecting tube 32, the mandrel 13 is crimped with the connecting tube 32, and the connecting tube 32 is welded to the spatula 31. After the spatula 31 extends into the sheath tube 15, the inner side wall of the sheath tube 15 and The blocking plate portion 33 on the spatula 31 cooperates to seal the gastric juice in the spatula 31 to prevent the gastric juice in the spatula 31 from leaking and flowing into the digestive tract. Preferably, the blocking plate portion 33 and the inner side wall of the tube hole of the sheath tube 15 are interference fit for closing the tube opening.

There is no special restriction on the way of connecting the runner 21 and the mandrel 13, as long as the mandrel 13 can be driven to rotate when the runner 21 rotates, and the mandrel 13 can move back and forth inside the runner 21. For this reason, As shown in Figures 1 and 2, the rear end of the mandrel 13 is sleeved with a conduit 14, and the conduit 14 and the mandrel 13 are flattened and crimped and fixed. The conduit 14 passes through the buckle 22, and the buckle 22 is provided with a conduit The flat hole 14 is matched so that the buckle 22 can drive the tube 14 and the mandrel 13 to rotate. The tube 14 may also be a block structure with a flat or an elliptical cross-section.

As shown in Figures 1 and 2, the runner 21 is sleeved on the front end of the first handle 11 and is axially limited by a convex ring. The runner 21 has a step hole that includes at least a first step and a second step. The outer diameter of the first step is smaller than the outer diameter of the second step. The first step is located in front of the second step. The step hole is provided with a buckle 22 and a sheath tube fixing tube 23, the runner 21 and the buckle 22 are fixedly connected, the rear end of the sheath tube 15 penetrates into the step hole and is fixedly connected with the sheath tube fixing tube 23, and the sheath tube is fixed. The tube 23 is axially restricted by the first step and the buckle 22. Specifically, the sheath tube fixing tube 23 has a limiting portion and a connecting portion. The limiting portion is axially restricted by the first step and the buckle 22. To limit the position, the rear end of the sheath 15 is sleeved on the connecting part and fixed. The mandrel 13 penetrates through the buckle 22 and the two are connected in a circumferentially limited and axially unrestricted manner to transmit rotation and relative movement back and forth, and the buckle 22 is connected with the runner 21 in a circumferential direction. In order to realize the transmission of rotation, the rotating wheel 21 drives the mandrel (13) to rotate through the buckle 22, and the buckle 22 is limited between the front end of the first handle 11 and the second step. In this way, the connecting structure of the first handle, the sheath tube and the runner is simple and reasonable, and the assembly is convenient. The runner can not only rotate relative to the first handle and the sheath, but also the runner can drive the mandrel to rotate.

Preferably, the sheath tube fixing tube 23 does not contact the inner wall of the runner 21. If the sheath tube 15 rotates, friction will occur between the sheath tube 15 and the human tissue, which will cause pain to the patient. 23 is not in contact with the inner side wall of the runner 21, and when the runner 21 is rotated, the sheath tube fixing tube 23 and the sheath tube 15 will not be driven to rotate synchronously, thereby reducing the pain of the patient.

Preferably, the runner 21 is provided with a plurality of rotating protrusions in the circumferential direction. The setting of the rotating rib is convenient for the operator to rotate the wheel 21. The sheath 15 is transparent. The transparent sheath 15 is convenient for the operator to observe whether gastric juice is scraped from the spatula 31.

The specified direction in this specific embodiment is only for the convenience of expressing the positional relationship between the various components and the mutual cooperation relationship. The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments. All technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

A rotatable spatula used under an endoscope, which is characterized in that it comprises a first handle (11) and a sliding handle (12) slidably arranged on the first handle (11). The front end of the first handle (11) is arranged There is a sheath (15), the sheath (15) passes through a mandrel (13), and the mandrel (13) can move back and forth in the sheath (15), one end of the mandrel (13) is sliding The handle (12) is connected, and the other end of the mandrel (13) is fixed with a scraper (31), and the handle (12) is moved forward and backward to drive the scraper (31) to extend and retract from the front end of the sheath (15).
The rotatable spatula used under the endoscope according to claim 1, characterized in that: a runner (21) is further provided between the first handle (11) and the sheath (15), and the The runner (21) is rotatably arranged at the front end of the first handle (11), the sheath (15) is inserted into the runner (21) and is axially constrained; the mandrel (13) passes through the runner (21), And the runner (21) can drive the mandrel (13) to rotate, and the mandrel (13) can move back and forth in the runner (21). By rotating the runner (21), the mandrel (13) and the scraper (13) can be driven to rotate. 31) Rotate.
The rotatable spatula used under the endoscope according to claim 2, characterized in that: the runner (21) has a step hole, the step hole includes at least a first step and a second step, the first step is The outer diameter is smaller than the outer diameter of the second step. The first step is located in front of the second step. The step hole of the runner (21) is provided with a buckle (22) and a sheath fixing tube (23), and the sheath (15) ) Penetrates into the stepped hole and is fixedly connected with the sheath tube (23), the sheath tube (23) is axially limited by the first step and the buckle (22), the mandrel ( 13) Through the buckle (22) and the two are connected in a circumferentially limited and axially unrestricted manner to realize the transmission of rotation and relative movement back and forth, the buckle (22) and the runner (21) are circumferentially connected Limit connection to realize transmission rotation.
The rotatable spatula used under the endoscope according to claim 3, characterized in that: the rotating wheel (21) and the buckle (22) are fixedly connected.
The rotatable spatula used under the endoscope according to claim 3, characterized in that: the sheath tube (23) has a limiting portion and a connecting portion, and the limiting portion is clamped by the first step and the connecting portion. The buckle (22) is axially limited front and rear, and the rear end of the sheath tube (15) is sleeved on the connecting part and fixed.
The rotatable spatula used under the endoscope according to claim 3, characterized in that: the rotating wheel (21) is sleeved on the front end of the first handle (11) and is axially limited by a convex ring .
The rotatable spatula used under the endoscope according to claim 3, characterized in that: the mandrel (13) is a steel wire, the rear end of the mandrel (13) is sleeved with a catheter (14), and the catheter (14) The tube (14) penetrates through the buckle (22), and the buckle (22) is provided with a flat hole matched with the tube (14) to buckle. (22) It can drive the tube (14) and the mandrel (13) to rotate.
The rotatable spatula used under the endoscope according to claim 2, characterized in that: the sheath (15) is a transparent sheath, and the rotating wheel (21) is provided with a plurality of rotating protrusions in the circumferential direction.
The rotatable spatula used under the endoscope according to claim 2, characterized in that: the spatula (31) comprises a spatula body, the middle part of the spatula body is recessed inward to form a cavity for containing gastric juice, The end of the spatula body far from the mandrel (13) has a blocking plate portion (33) extending toward the inner side wall of the sheath tube (15), and side blocking plates are respectively extended on the left and right sides of the spatula body Department (34).
The rotatable spatula used under the endoscope according to claim 9, characterized in that: the blocking plate part (33) and the tube hole of the sheath tube (15) are in interference fit for sealing the tube opening.