Conveying pipeline assembly for prostate implant

Abstract

The utility model discloses a conveying pipeline assembly for a prostate implant, which belongs to a prostatic hyperplasia surgical instrument and comprises a main pipe body, a puncture needle component, an imaging system and a tangent component. The upper edge, the shaft core and the lower edge of the main pipe body are provided with a puncture needle shuttle pipe position groove, a mirror cavity and a tangent line shuttle pipe position groove respectively in the length direction of the main pipe body, and the puncture needle shuttle pipe position groove and the tangent line shuttle pipe position groove are each of a closed cavity structure or an outer edge open structure. According to the conveying pipeline assembly, the main pipe body with the oval section structure is adopted, high structural strength and stability are achieved, and the requirement for convenient arrangement of the puncture needle assembly, the imaging system and the line cutting assembly is met.

Description

Technical Field

[0001] This utility model relates to surgical instruments for benign prostatic hyperplasia, and more particularly to a delivery conduit assembly for prostate implants. Background Technology

[0002] Benign prostatic hyperplasia (BPH) is a common disease among middle-aged and elderly men. Its main manifestations include prostatic stroma and glandular component hyperplasia, prostatic enlargement (BPE), lower urinary tract symptoms (LUTS), and bladder outlet obstruction (BOO). Currently, treatment options for BPH include medication and surgery. Surgical treatments include: (1) transurethral resection of the prostate (TURP); (2) suprapubic or retropubic prostatectomy; (3) laser enucleation or resection of the prostate; and (4) minimally invasive implantation. Among these, minimally invasive implantation involves inserting a permanent implant into the prostate via a delivery system. The implant mechanically separates the two lobes of the prostate, preventing urethral obstruction and providing continuous relief of BPH symptoms. This procedure eliminates the need for prostate tissue resection and ablation, reducing patient suffering and allowing for a faster return to normal life.

[0003] Existing prostate implant delivery systems typically require a delivery handle and delivery tubing to facilitate a stepwise implantation process. The delivery tubing comprises a main tube, a puncture needle system, an anchoring wire cutting system, the implant, and an imaging system. The puncture needle system punctures the prostate capsule and releases the implant's capsule flap, while the anchoring wire cutting system releases the urethral end flap on the prostatic urethral side and tightens and cuts the anchoring wire. Limited by the prostatic urethral orifice diameter, the main tube of the delivery tubing acts as a support frame for the puncture needle system and anchoring wire cutting system. This type of main tube has thin walls, making it prone to deformation during implantation into the prostatic urethra, resulting in poor stability. Furthermore, it requires the use of a 2.9mm cystoscope, which must be installed and fixed before each use and removed for disinfection afterward, posing a risk of infection. Additionally, 2.9mm rigid cystoscopes are not commonly found in hospitals, causing significant inconvenience. Utility Model Content

[0004] Technical problem solved: In view of the problem of insufficient structural strength of the main body of the delivery pipeline in the prior art, this utility model provides a delivery pipeline assembly for prostate implants. The main body adopts an elliptical cross-section structure, which has high structural strength and stability, and meets the requirements for convenient placement of the puncture needle assembly and the tangential assembly.

[0005] Technical solution: The present invention provides a delivery conduit assembly for prostate implants. The delivery conduit assembly includes a main body, a puncture needle assembly, an imaging system, and a tangential assembly. The radial cross-section of the main body is elliptical. The upper edge, the core, and the lower edge of the main body are respectively provided with a puncture needle shuttle slot, a scope cavity, and a tangential shuttle slot along their length direction. The puncture needle shuttle slot and the tangential shuttle slot are either sealed cavities or open structures on the outer edge.

[0006] Preferably, the front end of the main body is connected to a cutting head module, and the cutting head module has a puncture groove on one side near the front end of the tangential shuttle tube slot. The cutting head module also has an arc-shaped channel for the puncture needle to pass through at one end near the puncture needle shuttle tube slot, and the outlet end of the arc-shaped channel is correspondingly set with the puncture groove.

[0007] Preferably, the puncture needle assembly includes a puncture needle shuttle tube fitted in a puncture needle shuttle tube slot and a puncture needle push tube slidably connected in the puncture needle shuttle tube. A puncture needle head is connected to the front end of the puncture needle push tube, and a capsule is housed inside the puncture needle head. An anchoring line is fixedly connected to the rear end of the capsule. A capsule push tube is provided inside the puncture needle push tube at the rear end of the capsule, and the anchoring line is housed inside the capsule push tube.

[0008] Preferably, the tangent assembly includes a tangent shuttle tube fitted in the tangent shuttle tube slot, a tangent knife tube installed inside the tangent shuttle tube, a urethral end piece push rod installed inside the tangent knife tube, and a urethral end piece provided at the front end of the urethral end piece push rod.

[0009] The front end of the tangential shuttle tube is inserted into the blade module, and the front end of the tangential shuttle tube is provided with a urethral end piece through hole corresponding to the puncture groove.

[0010] The front end of the tangent tube is provided with a tangent groove corresponding to the urethral end piece through hole, and the rear end of the tangent groove is provided with a tangent cutting edge.

[0011] One end of the urethral end piece is provided with a V-shaped notch for the anchoring line to be inserted.

[0012] Preferably, the blade module has observation windows on both sides corresponding to the mirror cavity, and a camera module mounting base is provided at the mirror cavity end of the blade module near the main body. The imaging system includes a camera module and wires housed in the mirror cavity, and an external plug is provided at the other end of the wires.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The conveying pipeline assembly of this utility model adopts a main body with an elliptical cross-section structure, which has high structural strength and stability, and meets the convenient layout of the puncture needle assembly, imaging system and tangential assembly.

[0015] 2. This imaging system can replace a cystoscope for observing the prostate surgical area, reducing the difficulty of the surgery. Attached Figure Description

[0016] Figure 1 This is a front view of the delivery system structure for the prostate implant of this utility model;

[0017] Figure 2 for Figure 1 Main view of the central pipeline assembly structure;

[0018] Figure 3 for Figure 2 Top view of the central pipeline assembly structure;

[0019] Figure 4 for Figure 2 Cross-sectional view of the central pipeline assembly along line AA;

[0020] Figure 5 for Figure 3 Cross-sectional view of the central conveying pipeline assembly along the BB direction;

[0021] Figure 6 for Figure 2 Exploded structural diagram of the central pipeline assembly;

[0022] Figure 7 for Figure 6 Schematic diagram of the front end structure of the tangent shuttle tube;

[0023] Figure 8 for Figure 6 Schematic diagram of the front end structure of the tangent blade tube;

[0024] Figure 9 for Figure 6 Schematic diagram of the mid-urethral end flap structure;

[0025] Figure 10 A schematic diagram of a prostate implant in its open state;

[0026] Figure 11 A schematic diagram illustrating the process of a puncture needle piercing the prostate at the front end of the delivery pipeline assembly;

[0027] Figure 12 A schematic diagram illustrating the process of retracting the puncture needle to release the diaphragm and anchoring line for the delivery pipeline assembly;

[0028] Figure 13 A schematic diagram illustrating the process of releasing the urethral disc and cutting the anchoring line to the delivery pipeline assembly.

[0029] Reference numerals: 1. Delivery handle; 2. Delivery tubing assembly; 3. Main body; 31. Puncture needle shuttle slot; 32. Endoscope cavity; 33. Tangential shuttle slot; 4. Blade module; 41. Puncture groove; 42. Arc-shaped channel; 43. Observation window; 5. Puncture needle assembly; 51. Puncture needle shuttle; 52. Puncture needle head; 53. Puncture needle push tube; 6. Capsule push tube; 7. Imaging system; 71. Camera module; 72. Wire; 73. External plug; 8. Tangential assembly; 81. Tangential shuttle; 811. Urethral end piece through hole; 82. Tangential blade tube; 821. Tangential groove; 822. Tangential cutting edge; 83. Urethral end piece push rod; 9. Capsule; 10. Anchoring line; 11. Camera module mounting base; 12. Urethral end piece; 121. V-shaped bayonet;

[0030] 02. Bladder; 03. Pubic bone; 04. Urethral bone; 05. Prostate gland; 06. Prostatic capsule. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings. Figures 1-13 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0032] like Figures 11-13 The image shows a coronal sectional view of the lower abdomen of a man with benign prostatic hyperplasia (BPH). The bladder (01) is a vesicular structure used to store urine, located posterior to the pubic bone (02). Its opening connects to a soft, elastic tubular structure called the urethra (03), through which urine stored in the bladder is discharged from the tip of the penis. The prostate (04) is located peripherally in the urethra at the junction of the urethra (03) and bladder (01). The health of the prostate (04) significantly impacts the normal function of the male reproductive system. For example, prostatic hyperplasia can compress the urethra (03), narrowing the urethral passage and potentially leading to problems such as urinary frequency, urgency, dysuria, and sexual dysfunction. The prostatic capsule (05) is distributed on the outer wall of the prostate (04), possessing a certain structural strength.

[0033] like Figure 10As shown, the anchoring implant, as a medical device for minimally invasive surgery to treat benign prostatic hyperplasia (BPH), typically includes a capsule 9 that is positioned on the outer side of the prostatic capsule 05, a urethral end piece 12 that is attached to the inner wall of the prostatic urethra, and an anchoring line 10 connecting the capsule 9 and the urethral end piece 12. The anchoring line pulls the urethral end piece 12 closer to the capsule 9, thereby expanding the urethral stricture and clearing the urine passage. In existing technologies, the capsule 9 has a straight-line structure. After the capsule 9 is released on the outer side of the prostatic capsule 05, the capsule 9 and the anchoring line form a T-shape. When the urethral end piece 12 is released on the urethral side and fixedly engaged with the anchoring line head, it forms an I-shape structure (e.g., ...). Figure 10 (As shown).

[0034] like Figures 1-5 In the illustrated embodiment, this utility model discloses a delivery conduit assembly for prostate implants. The delivery conduit assembly 2 includes a main body 3, a puncture needle assembly 5, an imaging system 7, and a tangential assembly 8. The radial cross-section of the main body 3 is elliptical. The upper edge, core, and lower edge of the main body 3 are respectively provided with a puncture needle shuttle slot 31, a scope cavity 32, and a tangential shuttle slot 33 along its length. The puncture needle shuttle slot 31 and the tangential shuttle slot 33 are either sealed cavities or open structures. The main body 3, with its elliptical cross-section, possesses high structural strength and stability, facilitating the convenient installation of the puncture needle assembly 5, the imaging system 7, and the tangential assembly 8.

[0035] like Figures 4-6 As shown, the front end of the main body 3 is connected to a blade module 4. A puncture slot 41 is provided on one side of the blade module 4 near the front end of the tangential shuttle slot 33. An arc-shaped channel 42 for the puncture needle to pass through is provided at one end of the blade module 4 near the puncture needle shuttle slot 31, with the outlet end of the arc-shaped channel 42 corresponding to the puncture slot 41. The puncture needle assembly 5 includes a puncture needle shuttle tube 51 fitted into the puncture needle shuttle slot 31 and a puncture needle push tube 53 slidably connected within the puncture needle shuttle tube 51. A puncture needle head 52 is connected to the front end of the puncture needle push tube 53, and a capsule 9 is housed within the puncture needle head 52. An anchoring line 10 is fixedly connected to the rear end of the capsule 9. A capsule push tube 6 is located within the puncture needle push tube 53 at the rear end of the capsule 9, and the anchoring line 10 is housed within the capsule push tube 6. The puncture needle 52 is housed within the arc-shaped channel 42. Pushed by the puncture needle pusher 53, the puncture needle 52 extends along the arc-shaped channel 42 from the puncture slot 41 side, thus ensuring that the puncture needle 52 forms a certain angle with the main tube 3 upon release, facilitating puncture of the prostatic hyperplasia site (e.g., ...). Figure 11(As shown). The puncture needle 52 contains a capsule 9. During the puncture process, the capsule 9 and the anchoring line 10 are simultaneously punctured into the prostate capsule 05. As the puncture needle push tube 53 retracts and pulls the puncture needle 52 back, the capsule 9 push tube 6 moves forward relative to the puncture needle push tube 53, thereby releasing the capsule 9 on the outer wall of the prostate capsule 05 and automatically opening it. After the capsule 9 opens, it forms a T-shaped structure with the anchoring line 10. Then, the capsule 9 push tube 6 moves backward, pulling the anchoring line 10 back to tighten the capsule 9 on the outer wall of the prostate capsule 05 (as shown). Figure 12 (As shown).

[0036] like Figures 5-10 As shown, the tangent assembly 8 includes a tangent shuttle tube 81 that is fitted into the tangent shuttle tube slot 33, a tangent knife tube 82 that is fitted inside the tangent shuttle tube 81, a urethral end piece push rod 83 that is fitted inside the tangent knife tube 82, and a urethral end piece 12 that is provided at the front end of the urethral end piece push rod 83. The tangent shuttle tube 81, the tangent knife tube 82 and the urethral end piece push rod 83 all adopt a square structure. The front end of the tangential shuttle tube 81 is inserted into the blade module 4, and the front end of the tangential shuttle tube 81 is provided with a urethral end piece through hole 811 corresponding to the puncture groove 41; the front end of the tangential blade tube 82 is provided with a tangential groove 821 corresponding to the urethral end piece through hole 811, and the rear end of the tangential groove 821 is provided with a tangential cutting edge 822. The size of the urethral end piece through hole 811 and the tangential groove 821 is larger than the size of the urethral end piece 12, so that the urethral end piece 12 can pass through the urethral end piece through hole 811 and the tangential groove 821 when anchored. A V-shaped notch 121 is provided at one end of the urethral end piece 12 for the anchoring line 10 to be inserted. After the capsule 9 is released and the anchoring line is tensioned, the urethral end piece pusher 83 pushes the urethral end piece 12 forward. During the forward movement of the urethral end piece 12, the anchoring line 10 is correspondingly engaged at the root of the V-shaped notch 121, thereby achieving anchoring of the anchoring line 10 and the urethral end piece 12. Then, the suturing knife tube 82 is pushed forward along the suturing shuttle tube 81. During the forward movement of the suturing knife tube 82, the suturing blade 822 can cut the anchoring line 10, completing the release of the anchoring implant (e.g., ...). Figure 13 (As shown).

[0037] like Figures 5-6As shown, observation windows 43 are provided on both sides of the blade module 4 corresponding to the endoscope cavity 32. A camera module mounting base 11 is provided at one end of the blade module 4 near the endoscope cavity 32 of the main body 3. The imaging system 7 includes a camera module 71 and wires 72 housed within the endoscope cavity 32. One end of the wires 72 is connected to the camera module 71, and the other end is provided with an external connector 73. The external connector 73 is connected to the display and enters the prostate surgery scene through the digital display delivery pipeline assembly 2. Specifically, the camera module 71 includes a camera and LEDs. The wires 72 of the camera and LEDs pass along the endoscope cavity 32 and connect to the external connector 73 located at the outer end of the delivery handle 1.

[0038] In the above embodiments, the capsule 9 can be made of metal or plastic, and the anchoring line 10 can be made of rigid or elastic material. Using elastic material can better shorten the distance between the capsule 9 and the urethral end piece 12 through its elastic contraction. The urethral end piece 12 can be made of metal or plastic, so that the prostate lateral lobe can expand outward at the inner wall of the urethra, thereby expanding the urethral obstruction.

[0039] It should be noted that the conveying handle 1 adopts the "handle for an anchor conveying system" disclosed in Chinese patent CN108095778B to realize the driving function of the conveying pipeline assembly 2, which will not be elaborated here.

[0040] During the procedure, when the capsule 9 is located within the tube of the puncture needle 52, the capsule 9 and the anchoring line 10 form a straight line for better placement within the capsule push tube 6 inside the puncture needle 52 and the puncture needle push tube 53. When the capsule 9 is exited from the needle tube of the puncture needle 52, the anchoring fins at the tail end of the capsule 9 pop outwards, and the capsule 9 and the anchoring line 10 form a T-shaped structure that locks onto the outer wall of the prostate capsule 05, providing stable support for the urethral end piece 12. After the capsule 9 is released, the puncture needle 52 tightens the anchoring line 10 during retraction, simultaneously pushing the urethral end piece 12 forward via the delivery handle 1 and fixing it firmly to the anchoring line 10, compressing and contracting the prostate urethral tissue. Then, the delivery handle 1 drives the tangent knife tube 82 forward along the tangent shuttle tube 81 to cut off the excess segment of the anchoring line 10, thus completing the anchoring of the prostate implant.

[0041] The above are preferred embodiments of the present 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 the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A delivery conduit assembly for a prostate implant, the delivery conduit assembly (2) comprising a main body (3), a puncture needle assembly (5), an imaging system (7), and a tangential assembly (8), characterized in that, The radial cross-section of the main body (3) is an elliptical structure. The upper edge, the core, and the lower edge of the main body (3) are respectively provided with a puncture needle shuttle slot (31), a mirror cavity (32), and a tangential shuttle slot (33) along their length direction. The puncture needle shuttle slot (31) and the tangential shuttle slot (33) are sealed cavities or open structures on the outer edge.

2. The delivery conduit assembly for a prostate implant according to claim 1, characterized in that, The front end of the main body (3) is connected to a blade module (4). The blade module (4) has a puncture slot (41) on one side near the front end of the tangential shuttle slot (33). The blade module (4) has an arc-shaped channel (42) for the puncture needle to pass through at one end near the puncture needle shuttle slot (31). The outlet end of the arc-shaped channel (42) is correspondingly set with the puncture slot (41).

3. The delivery conduit assembly for a prostate implant according to claim 2, characterized in that, The puncture needle assembly (5) includes a puncture needle shuttle tube (51) fitted in the puncture needle shuttle tube slot (31) and a puncture needle push tube (53) slidably connected in the puncture needle shuttle tube (51). The front end of the puncture needle push tube (53) is connected to a puncture needle head (52). A capsule (9) is housed in the puncture needle head (52). An anchoring line (10) is fixedly connected to the rear end of the capsule (9). A capsule push tube (6) is provided in the puncture needle push tube (53) at the rear end of the capsule (9). The anchoring line (10) is housed in the capsule push tube (6).

4. The delivery conduit assembly for a prostate implant according to claim 3, characterized in that, The tangent assembly (8) includes a tangent shuttle tube (81) fitted in the tangent shuttle tube slot (33), a tangent knife tube (82) fitted inside the tangent shuttle tube (81), a urethral end piece push rod (83) fitted inside the tangent knife tube (82), and a urethral end piece (12) is provided at the front end of the urethral end piece push rod (83). The front end of the tangential shuttle tube (81) is inserted into the blade module (4), and the front end of the tangential shuttle tube (81) and the puncture groove (41) are respectively provided with urethral end piece through hole (811). The front end of the tangent tube (82) is provided with a tangent groove (821) corresponding to the urethral end piece through hole (811), and the rear end of the tangent groove (821) is provided with a tangent cutting edge (822). One end of the urethral end piece (12) is provided with a V-shaped bayonet (121) for the anchoring line (10) to be inserted.

5. The delivery conduit assembly for a prostate implant according to claim 2, characterized in that, The blade module (4) has observation windows (43) on both sides corresponding to the mirror cavity (32), and the blade module (4) has a camera module mounting base (11) at one end of the mirror cavity (32) near the main body (3). The imaging system (7) includes a camera module (71) and a wire (72) housed in the mirror cavity (32), and the other end of the wire (72) is provided with an external plug (73).

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