Visual prostate implant conveying device

Abstract

The invention discloses a visual prostate implant conveying device, and belongs to prostatic hyperplasia surgical instruments.The conveying device comprises a conveying handle and a conveying pipeline, the conveying pipeline comprises a puncture needle pipeline, a composite pipeline, an installation end, an imaging system and a pressing plate, a needle cavity is formed in the puncture needle pipeline, a through cavity is formed in the composite pipeline, and the installation end is connected with the through cavity; the composite pipeline is fixedly connected to the lower side of the puncture needle pipeline; an arc-shaped channel in butt joint with the puncture needle pipeline is arranged in the installation end, and a pressing plate containing cavity is formed in the position, corresponding to the front end of the composite pipeline, of the lower side of the installation end. A camera storage cavity is formed in the portion, located on the lower side of the arc-shaped channel, in the mounting end, and observation windows are formed in the two sides of the mounting end and correspond to the camera storage cavity. The imaging system comprises a camera module rotationally arranged in the camera storage cavity; one end of the pressing plate is rotationally connected to the composite pipeline outlet end. The conveying pipeline has a large operation view field and is more convenient and safer to use, and the use requirement is lowered.

Description

Technical Field

[0001] The invention belongs to surgical instruments for prostate hyperplasia, and in particular to a conveying device for a visualized prostate implant. Background Art

[0002] Benign prostatic hyperplasia (BPH) is a common disease in middle-aged and elderly men. Its main manifestations include hyperplasia of prostate stroma and glandular components, benign prostatic enlargement (BPE), lower urinary tract symptoms (LUTS), and bladder outlet obstruction (BOO). Currently, there are two treatment methods for BPH: drug therapy and surgical treatment. Surgical treatment includes: (1) transurethral resection of the prostate; (2) suprapubic or retropubic prostatectomy; (3) laser prostatectomy or resection; (4) minimally invasive treatment with implants. Among them, minimally invasive treatment with implants is to implant a permanent implant into the prostate through a delivery system, and use the implant to mechanically separate the two lobes of the prostate so that it no longer blocks the urethra, thereby continuously relieving the symptoms of BPH patients. There is no need to resect or ablate the prostate tissue, which can relieve the pain of patients and enable them to return to normal life as soon as possible. The existing delivery system needs to be used with a 2.9mm cystoscope, which needs to be installed and fixed before each use, and removed and disinfected after use, which poses an infection risk. In addition, 2.9mm rigid cystoscopes are not common in hospitals, which causes great inconvenience in use. In addition, the conventional delivery system has high technical requirements for implants. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a visual prostate implant delivery device with a larger field of view, more convenient and safer use, and lower usage requirements.

[0004] Technical solution: The delivery device of a visualized prostate implant described in the present invention comprises a delivery handle and a delivery pipeline detachably connected to the delivery handle, wherein the delivery pipeline comprises: A puncture needle conduit, wherein a needle cavity is provided in the puncture needle conduit for the puncture needle to pass through; A composite pipe, wherein a through cavity is provided in the composite pipe; the composite pipe is fixedly connected to the lower side of the puncture needle pipe; A mounting end is provided inside the mounting end, wherein an arc-shaped channel docking with the puncture needle pipeline is provided, a pressure plate storage cavity is provided at the lower side of the mounting end corresponding to the front end of the composite pipeline, and the outlet end of the arc-shaped channel is located in the pressure plate storage cavity; a camera storage cavity is provided inside the mounting end at the lower side of the arc-shaped channel, and observation windows are provided on both sides of the mounting end corresponding to the camera storage cavity; An imaging system, the imaging system comprising a camera module rotatably arranged in a camera storage cavity, wherein a rear end of the camera module is connected to a rotating drive rod accommodated in a composite pipe; A pressure plate, one end of which is rotatably connected to the outlet end of the composite pipe, the pressure plate can be received in the pressure plate receiving cavity, and the rear end of the pressure plate is connected to a pressure plate driving rod received in the composite pipe.

[0005] Preferably, the camera module includes a camera and a lamp bead, and transmission wires of the camera and the lamp bead pass through the composite pipe and are connected to an external power source of the delivery handle.

[0006] Preferably, the needle tube of the puncture needle accommodates an anchoring implant, which includes a distal anchor, an anchoring line and a proximal anchor, and the distal anchor and the proximal anchor are contained in the puncture needle in a closed state; the distal anchor is released at the outer wall of the prostate capsule and automatically pops open, and the proximal anchor is released at the prostate urethra side and automatically pops open.

[0007] Preferably, the distal anchor and the proximal anchor have the same structure; The distal anchor comprises an anchor end tube and at least two anchor fins bifurcated circumferentially at one end of the anchor end tube. Applying pressure to the anchor fins can cause the anchor fins to contract into a cylindrical structure coaxial with the anchor end tube. When the distal anchor or the proximal anchor passes through the puncture needle tube, the anchor fins pop out to the outside.

[0008] Preferably, a connection hole is provided at one end of the anchoring end tube, and both ends of the anchoring line are respectively fixedly connected in corresponding connection holes of the distal anchor piece and the proximal anchor piece.

[0009] Preferably, the anchoring fins include two fins which are arranged at one end of the anchoring end tube and distributed in the circumferential direction, and the two anchoring fins form a straight structure when opened in opposite directions.

[0010] Preferably, the anchoring fins include three fins which are arranged circumferentially at one end of the anchoring end tube, and when the three anchoring fins are opened outward, the angle between any two of them is 120°.

[0011] Preferably, the anchor end tube has a plurality of clamping grooves evenly distributed in the circumferential direction, and the clamping grooves are recessed into the tube to clamp the anchor line end in the anchor end tube.

[0012] Preferably, a longitudinal groove is provided on the inner side of the anchoring fin along the axial direction thereof, and a channel for accommodating the anchoring line is formed when the anchoring fin is in a closed state.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The delivery device of the present invention is equipped with an imaging system, which can adjust the camera viewing angle, has a larger operating field of view, and does not require an additional cystoscope, and does not require the cystoscope to be disinfected. It is more convenient and safe to use, reduces operating requirements, and has a wider range of uses; 2. The front end of the delivery pipeline is equipped with a pressure plate, which is convenient for placing the prostate hyperplasia tissue through the pressure plate during the operation, and is also convenient for observing the prostate surgery area in cooperation with the imaging system, reducing the difficulty of the operation; 3. The anchoring fin structure that can be used for both distal anchors and proximal anchors can use a shorter anchoring fin length to obtain the same or even stronger anchoring function as the conventional distal anchor, thereby reducing the puncture needle puncture length and reducing surgical risks; 4. The anchoring fins used in the distal anchor or the proximal anchor form a straight structure or a triangular structure after being unfolded, which can achieve a better anchoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a conveying device according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure in which the pressure plate at the front end A of the middle conveying pipeline is in a closed state; Figure 3 for Figure 4 Schematic diagram of the structure in which the pressure plate at the front end A of the middle conveying pipeline is in an open state; Figure 4 for Figure 1 A longitudinal structural cross-sectional view of the front end of the middle conveying pipeline; Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure of the anchoring implant; Figure 6 for Figure 5 Schematic diagram of the structure of the mid-to-distal anchor in the pop-up state; Figure 7 for Figure 6 Schematic diagram of the structure of the mid-distal anchor in the closed state; Figure 8 for Figure 1 Schematic diagram of the process of the puncture needle piercing the prostate at the front end of the middle delivery pipeline; Fig. 9 for Figure 8Schematic diagram of the process of the midline puncture needle piercing the prostate to fix the distal anchor; Fig.10 for Fig. 9 Schematic diagram of the process of retracting the midline puncture needle to release the proximal anchor.

[0015] Reference numerals: 1. Delivery handle; 11. External power cord; 2. Delivery pipeline; 3. Puncture needle pipeline; 4. Composite pipeline; 5. Mounting end; 51. Pressure plate storage cavity; 52. Arc channel; 53. Camera storage cavity; 54. Observation window; 6. Puncture needle; 7. Imaging system; 71. Camera module; 72. Rotating drive rod; 8. Pressure plate; 81. Pressure plate drive rod; 9. Anchor implant; 91. Distal anchor; 911. Anchor end tube; 912. Connection hole; 913. Anchor fin; 914. Longitudinal groove; 915. Clamping groove; 92. Anchor line; 93. Proximal anchor; 01. Bladder; 02. Pubis; 03. Urethra; 04. Prostate; 05. Prostatic capsule. DETAILED DESCRIPTION

[0016] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the attached Figures 1 to 10 The technical solutions of the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0017] like Figures 8-10 As shown, a coronal cross-section of the lower abdomen of a man with prostate hyperplasia, the bladder 01 is a bubble-like structure for storing urine, located behind the human pubic bone 02, and its open end is connected to a soft, elastic tubular structure as the urethra 03, and the urine stored in the bladder is discharged from the front end of the penis through the urethra 03. The prostate 04 is located outside the urethra at the junction of the urethra 03 and the bladder 01. The health of the prostate 04 has an important impact on the normal function of the male reproductive system. For example, if the prostate hyperplasia occurs, it will squeeze the urethra 03 and narrow the urethral passage, which may cause problems such as frequent urination, urgent urination, painful urination, and sexual dysfunction. The prostate capsule 05 is distributed on the outer wall of the prostate 04, and the prostate capsule 05 has a certain structural strength.

[0018] As a medical device for minimally invasive surgery to treat prostate hyperplasia, anchor implants usually include a distal anchor that is clamped on the outside of the prostate capsule 05, a proximal anchor that is clamped on the inner wall of the prostate urethra, and an anchor line connecting the distal anchor and the proximal anchor. The proximal anchor is pulled closer to the distal anchor by the anchor line, thereby expanding the urethral stenosis and clearing the urine discharge path. The existing distal anchor adopts a straight structure. After the distal anchor is released on the outside of the prostate capsule 05, the distal anchor and the anchor line form a T-shaped structure. The proximal anchor is released on the urethra side and fixedly clamped with the anchor line head.

[0019] like Figures 1 to 4 In the illustrated embodiment, the delivery device of the visualized prostate implant of the present invention comprises a delivery handle 1 and a delivery pipe 2 detachably connected to the delivery handle 1, the delivery pipe 2 comprises a puncture needle pipe 3, a composite pipe 4, a mounting end 5, an imaging system 7 and a pressing plate 8, and a needle cavity for the puncture needle 6 to pass through is arranged in the puncture needle pipe 3. A through cavity is arranged in the composite pipe 4, and the composite pipe 4 is fixedly connected to the lower side of the puncture needle pipe 3. The mounting end 5 is correspondingly connected to the front end of the puncture needle pipe 3 and the composite pipe 4, and an arc-shaped channel 52 docking with the puncture needle pipe 3 is arranged in the mounting end 5, the puncture needle 6 is accommodated in the puncture needle pipe 3, and the front end of the puncture needle is pierced from the side of the mounting end 5 through the arc-shaped channel 52, so that the puncture needle 6 forms a certain angle with the delivery pipe 2 when released, which is convenient for the puncture needle 6 to pierce the prostate hyperplasia. A pressure plate receiving cavity 51 is arranged at the lower side of the mounting end 5 corresponding to the front end of the composite pipe 4. The mounting end 5 is open at the side corresponding to the pressure plate receiving cavity 51. The outlet end of the arc channel 52 is located in the pressure plate receiving cavity 51. That is, when the puncture needle is released, the puncture needle 6 passes through the arc channel 52 from the side of the pressure plate receiving cavity 51 and realizes the puncture action on the prostate 04. A camera storage cavity 53 is arranged at the lower side of the arc-shaped channel 52 in the mounting end 5, and observation windows 54 are arranged on both sides of the mounting end 5 corresponding to the camera storage cavity 53. The imaging system 7 includes a camera module 71 rotatably arranged in the camera storage cavity 53, and the rear end of the camera module 71 is connected to a rotating drive rod 72 accommodated in the composite pipe 4. During the operation, in order to increase the field of view of the delivery pipe 2 at the prostatic urethra, the rotation of the rotating drive rod 72 can drive the camera module 71 to rotate in the camera storage cavity 53, so that the camera module 71 can be aligned with the observation window 54, which is convenient for observing the prostate; in addition, the rotating delivery pipe 2 in the urethra can further improve the operation field of view, improve the operation accuracy of the operation, and reduce the operation difficulty of the puncture needle operation.

[0020] like Figures 2~4As shown, the outlet end of the composite pipe 4 is hingedly connected to one end of the pressing plate 8 through a pivot, and the pressing plate 8 is received in the pressing plate receiving cavity 51 by pivot rotation. A pressing plate driving rod 81 received in the composite pipe 4 is connected to the rear end of the pressing plate 8. The conveying handle 1 pushes the pressing plate driving rod 81 forward or backward, so that the pressing plate 8 can be opened or closed along the pivot rotation and received in the pressing plate receiving cavity 51. When the conveying handle 1 pushes the pressing plate driving rod 81 forward, the pressing plate 8 is driven to open, and the pressing plate 8 squeezes the prostate hyperplasia tissue, which is convenient for the placement of the anchor implant 9. In addition, the opening of the pressing plate 8 is also convenient for cooperating with the camera module 71 to observe the prostate hyperplasia tissue.

[0021] like Figure 4 In the illustrated embodiment, the camera module 71 includes a camera and a lamp bead, and the transmission wires of the camera and the lamp bead pass through the composite pipe 4 and are connected to the external power line 11 of the delivery handle 1.

[0022] like Figure 4 In the illustrated embodiment, the needle tube of the puncture needle 6 contains an anchoring implant 9, which includes a distal anchor 91, an anchoring line 92, and a proximal anchor 93. The distal anchor 91 and the proximal anchor 93 are contained in the puncture needle in a closed state; the distal anchor 91 is released and automatically pops open on the outer wall of the prostate capsule 05, and the proximal anchor 93 is released and automatically pops open on the urethra side of the prostate 04. In this embodiment, the anchoring implant 9 uses a fixed distance implant, that is, the length of the anchoring line 92 connecting the distal anchor 91 and the proximal anchor 93 is specific, and anchoring implants 9 of different lengths are configured according to different anchoring positions of the prostate 04.

[0023] like Figures 4 to 7In the illustrated embodiment, the distal anchor 91 and the proximal anchor 93 adopt the same structure. The distal anchor 91 includes an anchor end tube 911 and at least two anchor fins 913 arranged in a circumferential direction at one end of the anchor end tube 911. A connection hole 912 is arranged at one end of the anchor end tube 911. The two ends of the anchor line 92 are respectively fixedly connected in the corresponding connection holes 912 of the distal anchor 91 and the proximal anchor 93. When the distal anchor 91 is located in the needle tube of the puncture needle 6, the anchor fins 913 are closed into a cylindrical structure coaxial with the anchor end tube 911, so that the distal anchor 91 can be better accommodated in the needle tube of the puncture needle; when the distal anchor 91 is output from the needle tube of the puncture needle 6, the anchor fins 913 pop outward, and the two anchor fins 913 are opened in the opposite direction to form a straight structure stuck on the outer wall of the prostate capsule 05, providing stable support for the proximal anchor 93. After the release of the distal anchor 91 is completed, the puncture needle 6 tightens the anchor line 92 during the retraction process, and synchronously pushes the pressure plate drive rod 81 forward through the delivery handle 1 to expand the pressure plate and squeeze the prostate urethra side tissue to contract. After the pressure plate 8 is expanded to a distance that meets the release condition of the proximal anchor 93, the proximal anchor 93 is released from the needle tube of the puncture needle 6, and the corresponding anchoring fins 913 of the proximal anchor 93 pop outward and get stuck on the side wall of the prostate urethra, completing the placement of the anchor implant 9 in the prostate.

[0024] In another optional embodiment, the anchoring fin 913 includes three fins circumferentially distributed at one end of the anchoring end tube 911, and the angle between the three anchoring fins 913 when opened outward is 120°. In this embodiment, the distal anchor 91 or the proximal anchor 93 can be more firmly clamped on the outside of the prostate capsule 05 or the prostate urethra side to improve the strength of the anchoring structure. It should be noted that the number of anchoring fins 913 can be more, and there is no limitation here.

[0025] like Figure 6 In the illustrated embodiment, the anchor end tube 911 is evenly distributed with a plurality of clamping grooves 915 in the circumferential direction, and the clamping grooves 915 are recessed into the tube to clamp the end of the anchor wire 92 in the anchor end tube 911. The distal anchor 91 can be made of metal material or plastic material, and the anchor wire 92 can be made of rigid material or elastic material. The use of elastic material can better shorten the distance between the distal anchor 91 and the proximal anchor 93 through its elastic contraction, so as to realize the outward expansion of the lateral lobe of the prostate at the inner wall of the urethra and the expansion of the urethra blockage.

[0026] like Figures 5 and 6 In the illustrated embodiment, a longitudinal groove 914 is provided on the inner side of the anchoring fin 913 along its length direction. When the anchoring fin 913 is in a closed state, a channel for accommodating the anchoring line 92 is formed on its inner side, so that the distal anchor 91, the proximal anchor 93 and the anchoring line 92 can be accommodated in the needle tube of the puncture needle 6.

[0027] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A delivery device for visualizing a prostate implant, the delivery device comprising a delivery handle (1) and a delivery pipe (2) detachably connected to the delivery handle (1), characterized in that: The delivery pipeline (2) comprises: A puncture needle conduit (3), wherein a needle cavity is provided in the puncture needle conduit (3) for the puncture needle (6) to pass through; A composite pipe (4), wherein a through cavity is provided in the composite pipe (4); the composite pipe (4) is fixedly connected to the lower side of the puncture needle pipe (3); A mounting end (5), wherein the mounting end (5) is provided with an arc-shaped channel (52) that is connected to the puncture needle pipeline (3); a pressure plate storage cavity (51) is provided at the lower side of the mounting end (5) corresponding to the front end of the composite pipeline (4); the outlet end of the arc-shaped channel (52) is located in the pressure plate storage cavity (51); a camera storage cavity (53) is provided at the lower side of the arc-shaped channel (52) in the mounting end (5), and observation windows (54) are provided on both sides of the mounting end (5) corresponding to the camera storage cavity (53); An imaging system (7), the imaging system (7) comprising a camera module (71) rotatably disposed in the camera storage cavity (53), the rear end of the camera module (71) being connected to a rotating drive rod (72) accommodated in the composite pipe (4); A pressure plate (8), one end of the pressure plate (8) being rotatably connected to the outlet end of the composite pipe (4), the pressure plate (8) being receivable in the pressure plate receiving cavity (51), and the rear end of the pressure plate (8) being connected to a pressure plate driving rod (81) received in the composite pipe (4).

2. The delivery device for visualizing a prostate implant according to claim 1, characterized in that: The camera module (71) comprises a camera and a lamp bead, and transmission wires of the camera and the lamp bead pass through the composite pipe (4) and are connected to an external power source of the delivery handle (1).

3. The delivery device for visualizing a prostate implant according to claim 1, characterized in that: The needle tube of the puncture needle (6) contains an anchoring implant (9), and the anchoring implant (9) includes a distal anchor (91), an anchoring line (92), and a proximal anchor (93). The distal anchor (91) and the proximal anchor (93) are contained in the puncture needle in a closed state; the distal anchor (91) is released on the outer wall of the prostate capsule (05) and automatically pops open, and the proximal anchor (93) is released on the urethra side of the prostate (04) and automatically pops open.

4. The delivery device for visualizing a prostate implant according to claim 3, characterized in that: The distal anchor (91) and the proximal anchor (93) have the same structure; The distal anchor (91) comprises an anchor end tube (911) and at least two anchor fins (913) bifurcated in a circumferential direction at one end of the anchor end tube (911); applying pressure to the anchor fins (913) can cause the anchor fins (913) to contract into a cylindrical structure coaxial with the anchor end tube (911); when the distal anchor (91) or the proximal anchor (93) passes through the needle tube of the puncture needle (230), the anchor fins (913) pop out to the outside.

5. The delivery device for visualizing a prostate implant according to claim 4, characterized in that: One end of the anchoring end tube (911) is provided with a connection hole (912), and both ends of the anchoring line (92) are respectively fixedly connected in corresponding connection holes (912) of the distal anchor piece (91) and the proximal anchor piece (93).

6. The delivery device for visualizing a prostate implant according to claim 4, characterized in that: The anchoring fins (913) comprise two pieces which are arranged at one end of the anchoring end tube (911) and are distributed in the circumferential direction. When the two anchoring fins (913) are opened in opposite directions, they form a straight structure.

7. The delivery device for visualizing a prostate implant according to claim 4, characterized in that: The anchoring fins (913) include three fins that are arranged at one end of the anchoring end tube (911) and distributed in the circumferential direction. When the three anchoring fins (913) are opened outward, the angle between any two of them is 120°.

8. The delivery device for visualizing a prostate implant according to claim 4, characterized in that: The anchor end tube (911) is evenly distributed with a plurality of clamping grooves (915) in the circumferential direction, and the clamping grooves (915) are recessed into the tube to clamp the end of the anchor line (92) in the anchor end tube (911).

9. The delivery device for visualizing a prostate implant according to claim 4, characterized in that: A longitudinal groove (914) is provided on the inner side of the anchoring fin (913) along its axial direction, and a channel for accommodating the anchoring wire (92) is formed when the anchoring fin (913) is in a closed state.

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