Puncture fixing device and pH capsule

Abstract

The puncture fixing device comprises a shell and a first puncture arm, a movable cavity and an adsorption cavity which are communicated with each other are formed in the shell, and the first puncture arm is rotatably installed in the movable cavity through a first positioning shaft; a first limiting part and a second limiting part which are sequentially arranged in the rotating direction of the first puncture arm are arranged on the inner wall of the movable cavity, the first limiting part is used for limiting the first puncture arm to be in an initial state, and the first puncture arm can be separated from the first limiting part under the action of external force and is clamped in the second limiting part when rotating to a puncture state; therefore, the stability of the first puncture arm at the puncture position is ensured. As the first limiting part and the second limiting part are of structures on the inner wall of the movable cavity, compared with an existing mode that an elastic piece is needed to keep the initial state and the puncture state of the first puncture arm, the complexity of the structure can be effectively reduced, and the advantages of being convenient to install and low in cost are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a puncture and fixation device, and also to a pH capsule comprising the puncture and fixation device. Background Art

[0002] A pH capsule is a medical device used to monitor the pH value in the digestive tract. The pH capsule can be fixed in the digestive tract by a fixing device.

[0003] Existing pH capsule securing devices typically include a rotatable puncture mechanism. Once the pH capsule is positioned at the target location within the digestive tract, the puncture mechanism is rotated to puncture and secure the pH capsule against the inner wall of the digestive tract. The puncture mechanism must maintain a stable position in both the initial and puncture states. Currently, this is primarily achieved through the use of elastic elements, such as an elastic push rod, to define the initial and puncture states. However, if the elastic push rod is too soft or too hard, it will not be able to effectively position the pH capsule, resulting in high costs and poor stability.

[0004] Therefore, how to improve the position accuracy of the puncture structure in the initial state and the puncture state, and reduce the complexity of the device, is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] One object of the present invention is to provide a puncture fixation device that can effectively ensure the position accuracy of the puncture structure and has a simple structure. Another object is to provide a pH capsule including the above-mentioned puncture fixation device.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A puncture fixing device comprises: a shell and a first puncture arm, wherein the shell is provided with an active chamber and an adsorption chamber that are interconnected, the first puncture arm is rotatably mounted in the active chamber via a first positioning shaft, and the inner wall of the active chamber is provided with a first limiting portion and a second limiting portion that are sequentially arranged along the rotation direction of the first puncture arm, the first limiting portion being used to limit the first puncture arm to an initial state, the first puncture arm being disengaged from the first limiting portion under the action of a preset external force, and being stuck in the second limiting portion when rotated to the puncture state.

[0008] In some embodiments, one end of the first puncture arm is a puncture portion, which is a first arc-shaped puncture rod, and the other end is provided with a first clamping portion, which is used to be clamped in the first limiting portion or the second limiting portion.

[0009] In some embodiments, the first limiting portion is a first protrusion provided on the inner side wall of the active cavity, and the second limiting portion includes two second protrusions provided on the inner side wall of the active cavity, and a card slot for accommodating the first clamping portion is formed between the two second protrusions.

[0010] In some embodiments, a third limiting portion is provided in the movable cavity, and the third limiting portion is used to prevent the first puncture arm from rotating in the initial state in a direction opposite to the direction of the first puncture arm from the initial state to the puncture state.

[0011] In some embodiments, a fourth limiting portion is provided in the movable cavity, and the fourth limiting portion is used to limit the puncture position of the first puncture arm when the first puncture arm is in the puncture state.

[0012] In some embodiments, the first puncture arm has a first limiting surface on a structure located between its rotation axis and the first clamping portion. When the first limiting surface contacts the third limiting portion, the first puncture arm is blocked from rotating in a direction opposite to the direction in which the first puncture arm moves from the initial state to the puncture state; the first puncture arm has a second limiting surface on a structure located between its rotation axis and the first arc-shaped puncture rod. When the second limiting surface contacts the fourth limiting portion, the first puncture arm is blocked from continuing to rotate.

[0013] In some embodiments, a first channel for allowing the first arc-shaped puncture rod to pass through is formed between the fourth limiting portion and the inner side wall of the movable cavity.

[0014] In some embodiments, the first clamping portion is provided with a first connecting hole for fixing one end of the first pull rope.

[0015] In some embodiments, the puncture fixing device also includes a second puncture arm, which is rotatably connected to the active cavity through a second positioning shaft. A fifth limiting portion is also provided on the side wall of the active cavity. The fifth limiting portion is used to limit the second puncture arm to an initial state. Under the action of a preset external force, the second puncture arm disengages from the fifth limiting portion and rotates toward the adsorption cavity, and is stuck in the second limiting portion when rotating to the puncture state. The rotation direction of the second puncture arm from the initial state to the puncture state is opposite to the rotation direction of the first puncture arm from the initial state to the puncture state.

[0016] In some embodiments, the first positioning axis and the second positioning axis are the same positioning axis.

[0017] A pH capsule comprises any one of the above-mentioned puncture and fixation devices.

[0018] Compared with the existing technology, the above technical solution has the following advantages:

[0019] The present invention provides a puncture fixation device, wherein the inner wall of the movable cavity is provided with a first limiting portion and a second limiting portion, which are arranged in sequence along the rotation direction of the first puncture arm. The first limiting portion is used to limit the first puncture arm to an initial state to ensure the stability of the first puncture arm when in the initial state. After the human mucosal tissue is sucked into the adsorption cavity, the first puncture arm can be driven to rotate. Under the action of an external force, the first puncture arm can be disengaged from the first limiting portion and, when rotating to the puncture state, it is stuck in the second limiting portion to ensure the stability of the first puncture arm when in the puncture position. Because the first and second limiting portions are structures on the inner wall of the movable cavity, compared with the existing system that requires elastic members to maintain the initial state and puncture state of the first puncture arm, the complexity of the structure can be effectively reduced, thereby having the advantages of easy installation and low cost.

[0020] The pH capsule provided by the present invention also has corresponding advantages because it includes the above-mentioned puncture and fixation device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the external structure of a puncture and fixation device provided by a specific embodiment of the present invention in an initial state;

[0023] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the puncture fixation device after removing the upper cover;

[0024] Figure 3 for Figure 2 A top view of the puncture fixation device;

[0025] Figure 4 for Figure 2 A side view of the puncture fixation device;

[0026] Figure 5 This is a schematic diagram of the external structure of a puncture and fixation device provided by a specific embodiment of the present invention when in a puncture state;

[0027] Figure 6 for Figure 5A schematic diagram of the three-dimensional structure of the puncture fixation device after removing the upper cover;

[0028] Figure 7 Schematic diagram of the internal structure of the shell.

[0029] The reference numerals are as follows:

[0030] 10-housing, 101-adsorption chamber, 102-active chamber, 1021-first limiting portion, 1022-second limiting portion, 10221-second protrusion A, 10222-second protrusion B, 10223-slot, 1023-third limiting portion, 1024-fourth limiting portion, 1025-fifth limiting portion, 11-bottom shell, 12-upper cover;

[0031] 20- positioning axis;

[0032] 30 - first puncture arm, 31 - first arc-shaped puncture rod, 32 - first clamping portion, 321 - first connecting hole, 33 - first limiting surface, 34 - second limiting surface;

[0033] 40-second puncture arm;

[0034] 50-First pull rope;

[0035] 60-Second pull rope. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] Please refer to Figures 1 to 7 .

[0038] The embodiment of the present invention provides a puncture fixation device that can be applied to a PH capsule. The puncture fixation device includes: a housing 10 and a first puncture arm 30. The housing 10 is provided with an active cavity 102 and an adsorption cavity 101 that are interconnected. Figure 1 As shown, the housing 10 includes a bottom shell 11 and an upper cover 12. The active chamber 102 and the adsorption chamber 101 are located in the bottom shell 11. The upper cover 12 is provided with a through hole communicating with the adsorption chamber 101. The upper cover 12 is buckled onto the bottom shell 11. The first puncture arm 30 is rotatably mounted in the active chamber 102 via the first positioning shaft 20. The inner wall of the active chamber 102 is provided with a first limiting portion 1021 and a second limiting portion 1022 arranged in sequence along the rotation direction of the first puncture arm 30. Figure 2As shown, the first puncture arm 30 can rotate in a clockwise direction. The first limiter 1021 is used to limit the first puncture arm 30 to an initial state to ensure the stability of the first puncture arm 30 in the initial state. After the human mucosal tissue is sucked into the adsorption chamber 101, the first puncture arm 30 can be driven to rotate. Under the action of external force, the first puncture arm 30 can be separated from the first limiter 1021 and stuck in the second limiter 1022 when rotating to the puncture state to ensure the stability of the first puncture arm 30 in the puncture position. Figure 6 As shown, the first puncture arm 30 and the first stopper 1021, as well as the first puncture arm 30 and the second stopper 1022, form an interference fit. Because the first stopper 1021 and the second stopper 1022 are formed on the inner wall of the active cavity 102, this effectively reduces structural complexity compared to existing systems that require elastic members to maintain the initial and puncture positions of the first puncture arm 30, thus offering the advantages of easier installation and lower cost.

[0039] In some embodiments, a puncture portion is provided at one end of the first puncture arm 30, and the puncture portion is a first arc-shaped puncture rod 31. A first clamping portion 32 is provided at the other end of the first puncture arm 30, wherein the movable cavity 102 and the adsorption cavity 101 partially overlap in top view projection, and the projection area of the movable cavity 102 in top view is smaller than the area of the adsorption cavity 101 in top view projection, forming a gourd shape. The first positioning axis 20 is arranged at a position in the movable cavity 102 close to the adsorption cavity 101. When the first puncture arm 30 is in the initial state, the first clamping portion 32 is stuck in the first limiting portion 1021; when the first puncture arm 30 is in the puncture state, the first clamping portion 32 is stuck in the second limiting portion 1022.

[0040] In some embodiments, as Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, the first limiting portion 1021 is a first protrusion provided on the inner side wall of the active cavity 102, and the first protrusion can be integrally formed on the inner side wall of the active cavity 102. The second limiting portion 1022 includes two second protrusions provided on the inner side wall of the active cavity 102, and a card groove 10223 for accommodating the first clamping portion 32 is formed between the two second protrusions. Figure 3As shown, a second protrusion close to the first protrusion can be recorded as a second protrusion A10221, and the other second protrusion is recorded as a second protrusion B10222. The second protrusion can be integrally formed on the inner wall of the active cavity 102, wherein the first protrusion and the second protrusion are preferably arc-shaped protrusions, and the length extension direction is parallel to the first positioning axis 20. The outer side surface of the first clamping portion 32 can also be selected as an arc-shaped surface. Through the arc-shaped surface and the arc-shaped protrusion, when the first puncture arm 30 is rotated from the initial state to the puncture state, the first clamping portion 32 can smoothly pass through the first protrusion and the second protrusion A10221, and finally be stuck in the card slot 10223 under the blocking action of the second protrusion B10222.

[0041] In some embodiments, as Figure 2 、 Figure 3 and Figure 7 As shown, a third limiting portion 1023 is provided in the active cavity 102. Figure 2 As shown, the first limiting portion 1021 extends upward from the inner bottom surface of the active cavity 102 and is located between the first positioning shaft 20 and the right side wall of the active cavity 102. The third limiting portion 1023 is used to prevent the first puncture arm 30 from rotating in the initial state in a direction opposite to the direction from the initial state to the puncture state. That is, the third limiting portion 1023 can prevent the first puncture arm 30 from rotating counterclockwise to ensure the position stability of the first puncture arm 30 in the initial state.

[0042] In some embodiments, as Figure 6 and Figure 7 As shown, a fourth limiting portion 1024 is provided in the movable cavity 102, and the fourth limiting portion 1024 and the third limiting portion 1023 are symmetrically distributed with respect to the first positioning axis 20. The fourth limiting portion 1024 is used to limit the puncture of the first puncture arm 30 when the first puncture arm 30 is in the puncture state, that is, the fourth limiting portion 1024 can prevent the first puncture arm 30 from continuing to rotate clockwise after rotating to the puncture state.

[0043] In some embodiments, as Figure 2As shown, the first puncture arm 30 has a first limiting surface 33 on its structure located between its rotation axis and the first clamping portion 32. The third limiting portion 1023 has a surface facing the first limiting surface 33 that is flat, so that the first limiting surface 33 can be in surface-to-surface contact with the third limiting portion 1023. When the first limiting surface 33 contacts the third limiting portion 1023, the first puncture arm 30 can be prevented from rotating in a direction opposite to the direction from the initial state to the puncture state of the first puncture arm 30. The first puncture arm 40 has a second limiting surface 34 on its structure located between its rotation axis and the first curved puncture rod 31. When the second limiting surface 34 contacts the fourth limiting portion 1024, the surface of the fourth limiting portion 1024 that faces the second limiting surface 34 is also flat. When the second limiting surface 34 contacts the third limiting portion 1023, the first puncture arm 30 can be prevented from further rotation.

[0044] In some embodiments, a first channel for the first curved puncture rod 31 to pass through is formed between the fourth limiting portion 1024 and the inner wall of the movable cavity 102. After the first curved puncture rod 31 passes through the first channel, the fourth limiting portion 1024 can prevent the first puncture arm 30 from continuing to rotate, thereby ensuring the position stability of the first puncture arm 30 in the puncture state.

[0045] In some embodiments, as Figure 3 and Figure 4 As shown, the first clamping portion 32 is provided with a first connecting hole 321 for fixing one end of the first pull rope 50, and one end of the shell 10 is provided with a first through-hole connected to the active cavity 102. One end of the first pull rope 50 is connected to the first connecting hole 321, and the other end is passed through the first through-hole. When the first pull rope 50 is subjected to tension, the first puncture arm 30 will rotate clockwise to rotate from the initial state to the puncture state.

[0046] In some embodiments, the puncture fixation device further includes a second puncture arm 40, which is rotatably connected to the movable cavity 102 via a second positioning axis, wherein the first positioning axis 20 and the second positioning axis can be the same positioning axis or different axes, and a fifth limiting portion 1025 is further provided on the side wall of the movable cavity 102. Figure 2As shown, the second puncture arm 40 has the same structure as the first puncture arm 30. After being installed on the same positioning axis, the second puncture arm 40 and the first puncture arm 30 are symmetrical with respect to the positioning axis. In addition, the second limiting portion 1022 and the first limiting portion 1021 are symmetrical with respect to the positioning axis. The fifth limiting portion 1025 is used to limit the second puncture arm 40 to an initial state. Under the action of a preset external force, the second puncture arm 40 disengages from the fifth limiting portion 1025 and rotates toward the adsorption chamber 101, and is stuck in the second limiting portion 1022 when rotating to the puncture state. The rotation direction of the second puncture arm 40 from the initial state to the puncture state is opposite to the rotation direction of the first puncture arm 30 from the initial state to the puncture state. In addition, the third limiting portion 1023 can prevent the second puncture arm 40 from continuing to rotate when it rotates to the puncture state, and the fourth limiting portion 1024 can prevent the second puncture arm 40 from rotating clockwise in the initial state, thereby ensuring the position stability of the second puncture arm 40 in the initial state and the puncture state. In addition, a second through-hole is provided at one end of the shell 10, and the second through-hole and the first through-hole are located at the same end of the shell 10. A second connecting hole is provided on the second clamping portion of the second puncture arm 40, and one end of the second pull rope 60 is connected to the second connecting hole, and the other end passes through the second through-hole. When the second pull rope 60 is subjected to tension, the second puncture arm 40 can rotate counterclockwise until the second clamping portion is stuck in the clamping slot 10223 of the second limiting portion 1022.

[0047] An embodiment of the present invention further provides a pH capsule, which can be a pH capsule, including the puncture and fixation device provided in any of the above embodiments. Regarding the beneficial effects of the pH capsule, reference can be made to the puncture and fixation device provided in the above embodiments, which will not be repeated here.

[0048] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above describes in detail the puncture fixation device and pH capsule provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the core concepts of the present invention. It should be noted that those skilled in the art will be able to make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A puncture fixation device, characterized in that: include: A shell (10) and a first puncture arm (30), wherein the shell (10) is provided with an active cavity (102) and an adsorption cavity (101) that are interconnected, and the first puncture arm (30) is rotatably mounted in the active cavity (102) via a first positioning shaft (20), and an inner wall of the active cavity (102) is provided with a first limiting portion (1021) and a second limiting portion (1022) that are sequentially arranged along the rotation direction of the first puncture arm (30), wherein the first limiting portion (1021) is used to limit the first puncture arm (30) to an initial state, and the first puncture arm (30) is disengaged from the first limiting portion (1021) under the action of an external force, and is stuck in the second limiting portion (1022) when rotating to the puncture state.

2. The puncture fixation device according to claim 1, characterized in that: One end of the first puncture arm (30) is a puncture portion, which is a first arc-shaped puncture rod (31), and the other end is provided with a first clamping portion (32), which is used to be clamped in the first limiting portion (1021) or the second limiting portion (1022).

3. The puncture fixation device according to claim 2, characterized in that: The first limiting portion (1021) is a first protrusion provided on the inner side wall of the active cavity (102), and the second limiting portion (1022) comprises two second protrusions provided on the inner side wall of the active cavity (102), and a clamping groove (10223) for accommodating the first clamping portion (32) is formed between the two second protrusions.

4. The puncture fixation device according to claim 3, characterized in that: A third limiting portion (1023) is provided in the movable cavity (102), and the third limiting portion (1023) is used to prevent the first puncture arm (30) from rotating in a direction opposite to the direction of the first puncture arm (30) from the initial state to the puncture state when the first puncture arm (30) is in the initial state.

5. The puncture fixation device according to claim 4, characterized in that: A fourth limiting portion (1024) is provided in the movable cavity (102), and the fourth limiting portion (1024) is used to limit the puncture of the first puncture arm (30) when the first puncture arm (30) is in the puncture state.

6. The puncture fixation device according to claim 5, characterized in that: The first puncture arm (30) has a first limiting surface (33) on its structure located between its rotation axis and the first clamping portion (32). When the first limiting surface (33) contacts the third limiting portion (1023), the first puncture arm (30) is blocked from rotating in a direction opposite to the direction in which the first puncture arm (30) moves from the initial state to the puncture state; the first puncture arm (30) has a second limiting surface (34) on its structure located between its rotation axis and the first arc-shaped puncture rod (31). When the second limiting surface (34) contacts the fourth limiting portion (1024), the first puncture arm (30) is blocked from continuing to rotate.

7. The puncture fixation device according to claim 6, characterized in that: A first passage for allowing the first arc-shaped puncture rod (31) to pass through is formed between the fourth limiting portion (1024) and the inner side wall of the movable cavity (102).

8. The puncture fixation device according to claim 2, characterized in that: The first clamping portion (32) is provided with a first connecting hole (321) for fixing one end of the first pull rope (50).

9. The puncture fixation device according to any one of claims 1 to 8, characterized in that: The puncture fixing device also includes a second puncture arm (40), which is rotatably connected to the active cavity (102) through a second positioning shaft. A fifth limiting portion (1025) is also provided on the side wall of the active cavity (102). The fifth limiting portion (1025) is used to limit the second puncture arm (40) to be in an initial state. Under the action of a preset external force, the second puncture arm (40) disengages from the fifth limiting portion (1025) and rotates toward the adsorption cavity (101), and is stuck in the second limiting portion (1022) when rotating to the puncture state. The rotation direction of the second puncture arm (40) from the initial state to the puncture state is opposite to the rotation direction of the first puncture arm (30) from the initial state to the puncture state.

10. The puncture fixation device according to claim 9, characterized in that: The first positioning shaft (20) and the second positioning shaft are the same positioning shaft.

11. A pH capsule, characterized in that: The invention comprises the puncture fixation device according to any one of claims 1 to 10.

Images