Supporting device

Abstract

The utility model provides a supporting device, which is suitable for supporting tissues to be ablated in a specific chamber in an ablation operation, and comprises a supporting component capable of entering or moving out of the specific chamber under the driving of a driving device; under the condition that the supporting assembly enters the specific cavity, the space between the to-be-ablated tissue and the inner wall of the specific cavity can be at least partially filled with the supporting assembly, and then the to-be-ablated tissue is supported and the inner wall of the specific cavity is protected.

Description

Technical Field

[0001] The utility model relates to a support device capable of supporting tissue to be ablated, in particular to a support device suitable for supporting tissue to be ablated in a specific cavity during an ablation operation. Background Art

[0002] In ablation operations, there are application scenarios where it is necessary to support tissue to be ablated. For example, it is necessary to provide support for the tissue to be ablated in the bladder, or to provide support for the tissue to be ablated in the gastric cavity. Considering the invasiveness of the ablation operation and ensuring the safety of the operation, how to effectively and safely support the tissue to be ablated has become a technical issue. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a support device capable of supporting tissue to be ablated. To achieve the above purpose, a solution of the utility model is a support device suitable for supporting tissue to be ablated in a specific cavity during an ablation operation, including a support assembly that can enter or exit the specific cavity under the drive of a drive device; when the support assembly enters the specific cavity, the support assembly can at least partially fill between the tissue to be ablated and the inner wall of the specific cavity, thereby supporting the tissue to be ablated.

[0004] According to the foregoing technical solution, the support assembly can support the tissue to be ablated and provide protection for the inner wall of the specific cavity.

[0005] In a preferred manner, the support assembly includes a plurality of support members arranged in series; after entering the specific cavity, the plurality of support members in the support assembly are stacked on each other to support the tissue to be ablated.

[0006] According to the foregoing technical solution, connecting a plurality of support members in series and providing support by mutual stacking after entering the cavity has a simple structure and convenient operation.

[0007] In a preferred manner, a flexible guide wire is connected between any two adjacent support members in the support assembly to form a bead shape, and the length of the guide wire is less than the size of any one of the two support members.

[0008] According to the foregoing technical solution, it is possible to avoid the guide wires between different support members from being wound around each other, affecting the entry and exit of the support assembly.

[0009] In a preferred manner, the interval between two adjacent support members in the support assembly is adjustable.

[0010] According to the foregoing technical solution, it is possible to increase the adaptability and flexibility of the support assembly.

[0011] In a preferred embodiment, the number of the plurality of support members in the support assembly can be increased or decreased; the number of the support members is adjusted based on the size of the volume to be filled between the tissue to be ablated and the inner wall of the specific chamber, and the size of each support member in the support assembly.

[0012] According to the foregoing technical solution, the adaptability and flexibility of the support assembly can be increased.

[0013] In a preferred embodiment, the guide wire has a proximal end entering the specific chamber and a distal end away from the proximal end; the size of the support member closer to the proximal end in the support assembly is larger than the size of the support member closer to the distal end.

[0014] According to the foregoing technical solution, the support member that enters first has a relatively larger size and is padded below, and the support members with relatively smaller sizes that enter later are stacked above, making the stacked support assembly more stable.

[0015] In a preferred embodiment, each support member in the support assembly is spherical or ellipsoidal.

[0016] According to the foregoing technical solution, spherical or ellipsoidal support members are more likely to adapt to the human body cavity.

[0017] In a preferred embodiment, a magnetic guiding mechanism is further provided; after the support assembly enters the specific chamber, the magnetic guiding mechanism can adsorb and guide at least a part of the support members in the support assembly to reach a predetermined position for supporting the tissue to be ablated.

[0018] According to the foregoing technical solution, the magnetic guiding mechanism can adsorb and guide the support members to reach the predetermined position, making the support of the support members for the tissue to be ablated more effective and the protection of the inner wall of the chamber more comprehensive.

[0019] In a preferred embodiment, the driving device includes a motor push rod or a gear for driving the support device.

[0020] According to the foregoing technical solution, the support assembly can be conveniently driven to enter and exit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to illustrate the present invention more clearly, the accompanying drawings of the present invention will be described and explained below. Obviously, the accompanying drawings in the following description only illustrate some aspects of certain exemplary embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a schematic structural diagram of the support device.

[0023] Figure 2 It is a schematic diagram of the support state of the support device.

[0024] Explanation of the attached drawing text:

[0025] 1 Guide wire

[0026] 2 Support assembly

[0027] 21 First support member

[0028] 22 Second support member

[0029] 23 Third support member

[0030] 3 Bladder lumen

[0031] 4 Tissue to be ablated Detailed implementation manners

[0032] The following describes in detail various exemplary embodiments of the present invention with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments should be construed as merely exemplary and not as limitations.

[0033] The terms such as "including" or "comprising" used in the present invention are intended to mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0034] All terms used in the present invention (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which the present invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary should be construed as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0035] For the components not described in detail in this part, the specific models and other parameters of the components, the mutual relationships between the components, and the control circuit, they can be considered as technologies, methods, and devices known to those of ordinary skill in the relevant art. However, in appropriate cases, the said technologies, methods, and devices should be regarded as part of the specification.

[0036] Overall structure

[0037] The following refers to Figure 1 andFigure 2 Describe the composition of the support device of the present utility model. Figure 1 It is a schematic structural diagram of the support device. Figure 2 It is a schematic diagram of the support state of the support device.

[0038] In ablation surgery, there are application scenarios where it is necessary to support the tissue 4 to be ablated. Here, the ablation surgery includes but is not limited to jet ablation and electrocautery ablation. As an example, only the case where the hyperplastic gland of the prostate enters the bladder lumen 3 is taken here for illustration. Taking the bladder lumen 3 as a specific cavity and the hyperplastic gland entering the bladder lumen 3 as the tissue 4 to be ablated, it should be understood, however, that the support device of the present utility model is not only applicable to the ablation of the hyperplastic gland in the bladder lumen 3, but also applicable to the ablation of other similar situations in other tissue cavities.

[0039] The support device of the present utility model is suitable for supporting the tissue 4 to be ablated in a specific cavity during ablation surgery. Specifically, referring to Figure 1 、 Figure 2 , the support device includes a support assembly 2, which can enter or exit the bladder lumen 3 under the drive of a driving device. Among them, when the support assembly 2 enters the bladder lumen 3, the support assembly 2 can at least partially fill between the tissue 4 to be ablated and the inner wall of the bladder lumen 3, thereby supporting the tissue 4 to be ablated, improving the effectiveness of the ablation operation, and at the same time protecting the inner wall of the cavity.

[0040] As shown in Figure 1 , the support assembly 2 includes a plurality of support members arranged in series. For example, the adjacent first support member 21, second support member 22, and third support member 23 in the figure. In fact, the number of support members is not limited to these three and can be more. In addition, the shape of each support member can be various styles such as spherical and ellipsoidal, and no specific limitation is made. For simplicity, only the spherical shape shown in the figure is taken here for illustration.

[0041] As shown in Figure 2 , after entering the bladder lumen 3, the plurality of support members in the support assembly 2 are stacked on each other to support the tissue 4 to be ablated. At the same time, during jet ablation surgery, when the water jet impacts the tissue 4 to be ablated, the stacked support assembly 2 can also block the impact of the water jet to protect the inner wall of the cavity.

[0042] In this embodiment, a flexible guide wire 1 is connected between any two adjacent support members in the support assembly 2. The guide wire 1 can be a continuous long guide wire, connecting the plurality of support members in the support assembly 2 to the guide wire 1 successively, or it can be a short guide wire connected between adjacent two support members one by one. Here, no limitation is made. For simplicity, only the case where the plurality of support members are connected in series to the same continuous guide wire 1 is taken here for illustration.

[0043] During the stacking process of the support assembly 2, the wire segments connecting different support members are prone to entanglement with each other, thereby affecting the stacking and removal of the support assembly 2. For this reason, as a preferred method, when the wire 1 is in a taut state, the length of the wire segment connecting any two adjacent support members is less than the dimension of any one of these two support members along the extension direction of the wire 1. Exemplarily, as Figure 1 shown, when the first support member 21 and the second support member 22 are both spherical, the length of the wire segment between the two is less than the diameter of any one of the two support members, so as to prevent the wire segments connecting different support members from entangling with each other after entering the bladder lumen 3.

[0044] As a preferred method, the interval size between two adjacent support members in the support assembly 2 can be adjusted. For example, the intervals between the first support member 21, the second support member 22, and the third support member 23 can be adjusted to increase the adaptability and flexibility of the support assembly 2.

[0045] As a preferred method, the number of support members in the support assembly 2 can be increased or decreased, and the number of support members can be adjusted based on the size of the volume to be filled between the tissue to be ablated 4 and the inner wall of the bladder lumen 3, as well as the size of each support member in the support assembly 2. As an example, when the support members are spherical, considering that the space occupied by each support member in the stacked state after being placed in the human body is approximately a cube, so assuming the volume to be filled is v, the corresponding number of support members can be calculated by the formula c≈v / d^3, where c is the number of support members and d is the diameter of the support member.

[0046] The wire 1 has a proximal end entering the bladder lumen 3 and a distal end away from the proximal end. Usually, the shapes and sizes of each support member in the support assembly 2 are the same to facilitate processing and assembly. However, as a preferred method, the size of the support member close to the proximal end of the wire 1 is larger than the size of the support member close to its distal end. In other words, the size of the support member that enters the bladder lumen 3 first in the support assembly 2 is larger than the size of the one that enters later, so that the support member with a relatively larger volume is first padded at the bottom of the bladder lumen 3, and the later-entering support member with a relatively smaller volume is stacked on the above-mentioned support member with a relatively larger volume, making the stacked support assembly 2 more stable.

[0047] It can be understood that after the support assembly 2 is placed in the human body, due to the patient's surgical position being lithotomy or lying flat, the support assembly 2 will deposit and adhere to the bottom of the bladder under the action of gravity, forming a protective pad to protect the bladder wall at the bottom. During the jet ablation surgery, the water jet is sprayed from top to bottom, and the hanging glandular tissue is located between the water jet spraying hole and the protective pad formed by the support assembly 2.

[0048] As a preferred mode, a magnetic guiding mechanism (not shown in the figure) as an electromagnetic device is also provided. The supporting member in the supporting assembly 2 contains ferromagnetic components. During the operation, the magnetic guiding mechanism is set in the in vitro or rectal probe insertion channel to absorb and guide at least part of the supporting assembly 2 to adhere to the lower side of the bladder cavity 3, provide protection for the lower side inner wall of the bladder cavity 3, and realize multi-directional and position-adjustable protection of the inner wall of the cavity.

[0049] In addition, when there is a deviation between the support assembly 2 placed in the bladder cavity 3 and the support position corresponding to the tissue to be ablated 4, the magnetic guide mechanism can also absorb the support assembly 2 and move it to the predetermined support position between the tissue to be ablated 4 and the bladder cavity 3, providing effective support for the tissue to be ablated 4. After the support assembly 2 is in place, the electromagnetic device is powered off to avoid interference with the ultrasound probe.

[0050] The material of the support member in the support assembly 2 of the utility model can be medical stainless steel, glass, ceramics and other materials with a certain weight and biocompatibility. When the support member is spherical, its diameter is set to 1mm to 4mm for easy insertion into the human body. The material of the guide wire 1 can be nickel-titanium alloy, with an iron core inside, which ensures a certain structural strength while being flexible.

[0051] The insertion process of the support component 2 can be guided by rectal ultrasound or transabdominal ultrasound. The insertion of the support component 2 can be carried out by means of a surgical instrument insertion channel in an ablation operation, such as a transurethral water knife or an outer sheath channel of an endoscope. The insertion is driven by a driving device, and the support member is pushed into the bladder cavity 3 by a motor push rod, and the distal end of the guide wire 1 is retained outside the body so that it can be removed from the bladder cavity 3 after use. The channel is a rigid channel established by the outer sheath of the endoscope, which can reach the prostate. The motor push rod can be stuck between two support members, pushing the support member near the proximal end of the guide wire 1 in front into the channel, and then adjusting the motor push rod to be stuck on the support member at the back, pushing more support members until the tissue 4 to be ablated is observed to be lifted up on ultrasound. Gears can also be used to continuously push the support members into the channel, which is not specifically limited here.

[0052] In summary, the support device of the utility model includes a series of support components 2, which enter the bladder cavity 3 through the natural cavity urethra of the human body, effectively support the tissue to be ablated 4 and protect the inner wall of the cavity, and then remove the support component 2 from the bladder cavity 3 through the guide wire 1 after the operation, which can improve the efficiency of the operation, reduce the damage to normal tissues and the workload of medical staff. And the insertion process does not require additional openings, and the guide wire 1 and the support component 2 can be inserted with the help of the endoscope channel of the original surgical device, which causes less trauma to the patient.

[0053] It should be understood that the specific embodiments described above are only used to explain the present utility model, and the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, making changes, substitutions, and combinations should be covered within the protection scope of the present utility model.

Claims

1. A support device, which is suitable for supporting the tissue to be ablated in a specific chamber during an ablation operation, and is characterized in that: It includes a support assembly that can enter or exit the specific chamber under the drive of a drive device; When the support assembly enters the specific chamber, the support assembly can at least partially fill the space between the tissue to be ablated and the inner wall of the specific chamber, thereby supporting the tissue to be ablated.

2. The support device according to claim 1, wherein: The support assembly includes a plurality of support members arranged in series; After entering the specific chamber, the plurality of support members in the support assembly are stacked on each other to support the tissue to be ablated.

3. The support device according to claim 2, wherein: A flexible guide wire is connected between any two adjacent support members in the support assembly to form a bead shape, and the length of the guide wire is less than the size of any one of the two support members.

4. The support device according to claim 2, wherein: The interval between two adjacent support members in the support assembly is adjustable.

5. The support device according to claim 2, wherein: The number of the plurality of support members in the support assembly can be increased or decreased; Based on the size of the volume to be filled between the tissue to be ablated and the inner wall of the specific chamber, and the size of each support member in the support assembly, the number of support members is adjusted.

6. The support device according to claim 3, wherein: The guide wire has a proximal end entering the specific chamber and a distal end away from the proximal end; The size of the support member near the proximal end in the support assembly is larger than the size of the support member near the distal end.

7. The support device according to claim 2, wherein: Each support member in the support assembly is spherical or ellipsoidal.

8. The support device according to any one of claims 1-7, wherein: A magnetic guiding mechanism is further provided; After the support assembly enters the specific chamber, the magnetic guiding mechanism can adsorb and guide at least a part of the support members in the support assembly to a predetermined position for supporting the tissue to be ablated outside the specific chamber.

9. The support device according to any one of claims 1-7, wherein: The drive device includes a motor push rod or a gear for driving the support device.

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