Transurethral prostate ablation sheath with adaptable biopsy assembly

Abstract

The utility model relates to medical auxiliary instrument technical field. Transurethral prostate ablation pipe suit of biopsy assembly's adaptation of can be suitable for, including an ablation pipe, the section of ablation pipe is drop -like structure, drop -like structure includes big head end and small head end, biopsy hole and ablation hole of side -by -side arrangement are set up in ablation pipe, biopsy hole is used for putting in biopsy needle, ablation hole is used for docking steam export of vapour generator, biopsy hole is located big head end, and ablation hole sets up in small head end, the head of ablation pipe is the inclined plane of inclined arrangement, and the central axis of inclined plane and ablation pipe has the included angle, and the head end opening of ablation hole is located the axial front of the head end opening of biopsy hole, the utility model discloses through the biopsy hole of adding, the insertion of biopsy needle is convenient to realize, provides biopsy channel. In addition, the utility model discloses through drop -like structure, convenient to provide biopsy hole and ablation hole simultaneously, through the inclined plane of head end, convenient to enlarge the exposed mouth area of biopsy hole and ablation hole head.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary technology, specifically a prostate ablation device. Background Technology

[0002] Steam ablation is a novel treatment for benign prostatic hyperplasia (BPH) patients that has been introduced in China in recent years. Patients with BPH often have elevated PSA levels, which needs to be differentiated from prostate cancer. For the clinical diagnosis of prostate cancer in urology, common biopsy methods include transperineal prostate biopsy and transrectal prostate biopsy.

[0003] Currently available ablation devices, such as the transurethral prostate tissue ablation system disclosed in CN118453092A and the medical device with a distal articulated segment disclosed in CN117479898A, can only perform ablation and cannot perform biopsy. There is a lack of a device that can perform both transurethral biopsy and ablation. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a transurethral prostate ablation tube kit that is compatible with biopsy components, thereby solving at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides a transurethral prostate ablation tube kit that is compatible with biopsy components, including an ablation tube, characterized in that the cross-section of the ablation tube is a teardrop-shaped structure, the teardrop-shaped structure including a large end and a small end;

[0006] The ablation tube has biopsy holes and ablation holes arranged side by side;

[0007] The biopsy port is used to insert a biopsy needle;

[0008] The ablation hole is used to connect to the steam outlet of the steam generator;

[0009] The biopsy port is located at the large end, and the ablation port is located at the small end;

[0010] The head of the ablation tube is an inclined surface with an angle between it and the central axis of the ablation tube. The opening of the ablation hole is located axially in front of the opening of the biopsy hole.

[0011] This invention optimizes the structure of the ablation tube by adding a biopsy port, facilitating the insertion of the biopsy needle and providing a biopsy channel. Furthermore, by optimizing the cross-sectional structure of the ablation tube, the teardrop shape facilitates the provision of both the biopsy port and the ablation port, while the beveled tip increases the exposed area of ​​both the biopsy port and the ablation port.

[0012] A further preferred embodiment includes an outer sheath, wherein a guide hole is provided inside the outer sheath for guiding the sliding of the ablation tube;

[0013] The guide hole includes an axially extending axial channel, which is connected to an arc-shaped bend channel, the opening of which is radially outward.

[0014] More preferably, the outer sheath is equipped with a biopsy needle inlet and outlet, which are connected to the biopsy port via a corrugated tube.

[0015] More preferably, the outer sheath is detachably connected to a needle chamber, the needle chamber is rotatably configured, and the biopsy needles are mounted on the needle chamber in a circumferential arrangement. The biopsy port is used to switch to face the biopsy needle mounted in the needle chamber.

[0016] More preferably, a spring plunger is installed on the needle chamber;

[0017] The outer sheath has hemispherical positioning holes that match the number of biopsy needles. Adjacent hemispherical positioning holes are connected by arc-shaped guide grooves. The depth of the arc-shaped guide grooves is less than the depth of the hemispherical positioning holes. The hemispherical positioning holes are used to embed the balls of the spring plunger.

[0018] More preferably, the biopsy needle has a pathological tissue barbed extraction chamber on its tip sidewall, and the opening of the pathological tissue barbed extraction chamber faces the radial outer side of the needle chamber.

[0019] More preferably, the biopsy needle is a bendable rod.

[0020] More preferably, a biopsy needle clamping mechanism is installed on the side of the needle chamber away from the biopsy port.

[0021] It facilitates clamping and securing the biopsy needle.

[0022] More preferably, a pivot hole is formed in the center of the needle chamber;

[0023] An extension post is provided on the outer sheath, and the extension post is threadedly connected to a screw that passes through the pivot hole. The needle chamber is rotatably mounted between the head of the screw and the outer sheath.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] This invention optimizes the structure of the ablation tube by adding a biopsy hole, which facilitates the insertion of the biopsy needle and provides a biopsy channel.

[0026] Furthermore, this invention optimizes the cross-sectional structure of the ablation tube. The teardrop shape facilitates the provision of biopsy and ablation holes, while the beveled tip increases the exposed area of ​​the biopsy and ablation holes. Attached Figure Description

[0027] Figure 1 This is a partial structural schematic diagram of the ablation tube in specific embodiment 1 of this utility model;

[0028] Figure 2 This is a cross-sectional view of the ablation tube in specific embodiment 1 of this utility model;

[0029] Figure 3 This is a schematic diagram of the tip of a biopsy needle according to a specific embodiment 1 of this utility model;

[0030] Figure 4 This is a cross-sectional view of the ablation tube in a specific embodiment 1 of the present invention, which is housed within a guide hole;

[0031] Figure 5 This is a cross-sectional view of the ablation tube in a specific embodiment 2 of the present invention, which is housed within a guide hole;

[0032] Figure 6 This is a cross-sectional view of the ablation tube extending out of the guide hole in a specific embodiment 2 of this utility model;

[0033] Figure 7 This is a schematic diagram of the needle compartment in a specific embodiment 2 of the present invention.

[0034] In the figure, 1 is the ablation tube, 11 is the ablation hole, 12 is the biopsy hole, 13 is the bevel, 2 is the bellows, 3 is the outer sheath, 31 is the biopsy needle inlet and outlet, 4 is the needle chamber, 41 is the pivot hole, 42 is the perforation, 43 is the biopsy needle clamping mechanism, 44 is the spring plunger, 5 is the biopsy needle, and 51 is the pathological tissue barbed extraction chamber. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] See Figures 1 to 4Specific Embodiment 1: A transurethral prostate ablation tube kit adaptable to biopsy components includes an ablation tube 1. The cross-section of the ablation tube 1 is teardrop-shaped, including a large end and a small end. The ablation tube 1 has a biopsy hole 12 and an ablation hole 11 arranged side-by-side. The biopsy hole 12 is used to insert a biopsy needle; the ablation hole 11 is used to connect to the steam outlet of a steam generator. The biopsy hole 12 is located at the large end, and the ablation hole 11 is located at the small end. The head of the ablation tube 1 is an inclined surface 13, which forms an angle with the central axis of the ablation tube 1. The opening of the tip of the ablation hole 11 is located axially forward of the opening of the tip of the biopsy hole 12. This invention optimizes the structure of the ablation tube 1 by adding a biopsy hole 12, facilitating the insertion of a biopsy needle and providing a biopsy channel. In addition, by optimizing the cross-sectional structure of the ablation tube 1, the present invention provides a biopsy hole 12 and an ablation hole 11 by means of a teardrop shape, while the beveled end of the head facilitates the expansion of the exposed area of ​​the biopsy hole 12 and the ablation hole 11.

[0037] The inner diameter of the biopsy hole is larger than that of the ablation hole. The openings of both the biopsy hole and the ablation hole on the inclined plane are elliptical.

[0038] It also includes an outer sheath 3, within which a guide hole is provided for guiding the sliding of the ablation tube 1. The guide hole includes an axially extending axial channel that connects with an arc-shaped bend channel, the opening of which faces radially outward. A biopsy needle inlet and outlet are mounted on the outer sheath 3, and these connect to the biopsy port 12 via a bellows tube 2. A pushing mechanism is installed inside the outer sheath 3 to drive the ablation tube 1 to slide within the guide hole and then radially extend out of the guide hole, as well as to house it within the guide hole. The pushing mechanism is not described in detail in this application. The ablation port 11 connects to the steam outlet of a steam generator via a flexible hose. The steam generator can be located inside or outside the outer sheath. The steam generator is not shown in the figure. When the ablation tube passes through the arc-shaped bend channel, the ablation port is located inside the arc-shaped bend channel. The biopsy port is located outside the arc-shaped bend channel.

[0039] The biopsy needle 5 has a pathological tissue barbed extraction chamber 51 on its tip sidewall, with the opening of the pathological tissue barbed extraction chamber 51 facing radially outward from the needle chamber 4. The biopsy needle is a bendable rod.

[0040] See Figures 5 to 7In specific embodiment 2, based on specific embodiment 1, the outer sheath 3 is detachably connected to a needle chamber 4. The needle chamber 4 is rotatable and is equipped with circumferentially arranged biopsy needles. The biopsy port 12 is used to switch the biopsy needles installed in the needle chamber 4. A spring plunger 44 is installed on the needle chamber 4. The outer sheath 3 has hemispherical positioning holes matching the number of biopsy needles. Adjacent hemispherical positioning holes are connected by arc-shaped guide grooves. The depth of the arc-shaped guide grooves is less than the depth of the hemispherical positioning holes. The hemispherical positioning holes are used to embed the balls of the spring plunger. The needle chamber 4 has through holes 42 for sliding the biopsy needles. The arc-shaped guide grooves are used to guide the circumferential movement of the balls of the spring plunger.

[0041] A biopsy needle clamping mechanism 43 is installed on the side of the needle chamber 4 away from the biopsy port 12. This facilitates the clamping and fixing of the biopsy needle. The biopsy needle clamping mechanism 43 includes a first clamping arm and a second clamping arm that are hinged to each other, with a torsion spring clamped between the first and second clamping arms. The first clamping arm is fixed to the outside of the needle chamber 4. The second clamping arm is rotatably mounted on the needle chamber 4. The first and second clamping arms form a clamping hole facing the through hole 42. A silicone layer is fixed to the inner wall of the clamping hole.

[0042] A pivot hole 41 is provided in the center of the needle chamber 4; an extension post is provided on the outer sheath 3, and the extension post is threadedly connected to a screw 45 that passes through the pivot hole 41. The needle chamber 4 is rotatably installed between the head of the screw 45 and the outer sheath 3.

[0043] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A transurethral prostate ablation catheter kit adaptable to biopsy components, comprising an ablation catheter, characterized in that, The ablation tube has a teardrop-shaped cross-section, which includes a large end and a small end. The ablation tube has biopsy holes and ablation holes arranged side by side; The biopsy port is used to insert a biopsy needle; The ablation hole is used to connect to the steam outlet of the steam generator; The biopsy port is located at the large end, and the ablation port is located at the small end; The head of the ablation tube is an inclined surface with an angle between it and the central axis of the ablation tube. The opening of the ablation hole is located axially in front of the opening of the biopsy hole.

2. The adaptable transurethral prostate ablation cannula kit of claim 1, wherein: It also includes an outer sheath, inside which a guide hole is provided for guiding the sliding of the ablation tube; The guide hole includes an axially extending axial channel, which is connected to an arc-shaped bend channel, the opening of which is radially outward.

3. The adaptable transurethral prostate ablation cannula kit of claim 2, wherein: The outer sheath is equipped with a biopsy needle inlet and outlet, which are connected to the biopsy port via a corrugated tube.

4. The adaptable transurethral prostate ablation cannula kit of claim 2, wherein: The outer sheath is detachably connected to a needle chamber, which is rotatably mounted. The needle chamber is equipped with biopsy needles arranged circumferentially, and the biopsy port is used to switch to face the biopsy needles installed in the needle chamber.

5. The adaptable transurethral prostate ablation cannula kit of claim 4, wherein: A spring plunger is installed on the needle chamber; The outer sheath has hemispherical positioning holes that match the number of biopsy needles. Adjacent hemispherical positioning holes are connected by arc-shaped guide grooves. The depth of the arc-shaped guide grooves is less than the depth of the hemispherical positioning holes. The hemispherical positioning holes are used to embed the balls of the spring plunger.

6. The adaptable transurethral prostate ablation cannula kit of claim 4, wherein: The biopsy needle has a pathological tissue barbed extraction chamber on its tip sidewall, and the opening of the pathological tissue barbed extraction chamber faces the radial outer side of the needle chamber.

7. The adaptable transurethral prostate ablation cannula kit of claim 1, wherein: The biopsy needle is a bendable rod.

8. The adaptable transurethral prostate ablation cannula kit of claim 4, wherein: A biopsy needle clamping mechanism is installed on the side of the needle chamber away from the biopsy port.

9. The adaptable transurethral prostate ablation cannula kit of claim 4, wherein: A pivot hole is provided in the center of the needle chamber; An extension post is provided on the outer sheath, and the extension post is threadedly connected to a screw that passes through the pivot hole. The needle chamber is rotatably mounted between the head of the screw and the outer sheath.

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