Elastic connecting device with reset function

Abstract

The utility model discloses an elastic connecting device with a reset function, which belongs to a connecting mechanism and comprises a support column, a spring fastener and an elastic body. The spring buckle comprises a buckle ring rotationally sleeving the supporting column and a hanging part arranged on the side wall of the buckle ring and used for hanging the puncture spring, and a limiting block is arranged on the side, different from the hanging part, of the side wall of the buckle ring; the elastomer is supported on the side wall of the limiting block and limits the opening direction of the hanging part. The elastic connecting device is in tension connection with the puncture spring in the force storage process of the puncture needle, and the elastic connecting device is disconnected with the puncture spring after the puncture spring is excited, so that the puncture needle does not need to overcome the tensile resistance of the puncture spring in the subsequent retraction process, and the retraction difficulty of the puncture needle is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to connecting mechanism especially, and it relates to a kind of elastic connecting device with reset function. BACKGROUND

[0002] Benign prostatic hyperplasia (BPH) is a common disease in middle-aged and elderly men, which is mainly manifested in the hyperplasia of prostate interstitial and glandular components, benign prostatic enlargement (BPE), lower urinary tract symptoms (LUTS), bladder outlet obstruction (BOO), etc. At present, the treatment methods for benign prostatic hyperplasia include drug therapy and surgical treatment. Surgical treatment includes: (1) transurethral resection of prostate; (2) suprapubic or retropubic prostatectomy; (3) laser prostate enucleation or resection; (4) minimally invasive treatment with implants, etc. Among them, the minimally invasive treatment with implants is to implant a permanent implant into the prostate through a delivery system, which mechanically separates the two lobes of the prostate to prevent obstruction of the urethra, thereby continuously relieving the symptoms of BPH patients without the need for prostate tissue resection and ablation, which can reduce the pain of patients and enable them to recover as soon as possible.

[0003] Chinese patent 202311679703.7 discloses "a prostate anchor delivery system that can be continuously used", which usually needs to cooperate with a delivery handle and a delivery pipeline to realize the step-by-step implantation process of the prostate implant. The delivery pipeline includes a main pipe body, a puncture needle system, an anchor line cutting system, an implant, and an imaging system. The puncture needle system is used to pierce the prostate capsule and release the capsule piece of the implant. The anchor line cutting system is used to release the urethral end piece on the urethral side of the prostate and complete the tension cutting of the anchor line. The specific implantation process of the implant is shown in Figures 13-15 The delivery system includes a delivery handle, which includes a handle box body. The handle box body includes two side buckle covers that are buckled together. An installation base plate is fixed and clamped between the two side buckle covers. A driving slide plate is slidably connected to one side of the installation base plate. A needle slide block and a wire slide block are arranged on the driving slide plate. A first spring hanging column is arranged at the rear end of the driving slide plate. A second spring hanging column is arranged at the front end of the installation base plate. A puncture spring is connected between the first spring hanging column and the second spring hanging column. When working, as shown in Figure 5 When the puncture needle in the delivery handle is in a cocked state, the driving slide plate is at the rightmost side relative to the installation base plate, and the puncture spring is in a stretched state to store power for the puncture needle to pierce out. As shown in Figure 13As shown, the drive slide plate in the delivery handle slides along the mounting base plate under the action of the puncture spring and drives the puncture needle to fire to pierce the lateral lobe of the prostate under the control of the trigger, at which time the puncture spring is in a relaxed state; as shown Figure 14 As shown, the drive slide plate in the delivery handle slides along the mounting base plate to the right and drives the puncture spring to stretch and store energy, and the puncture needle is retracted, under the control of the trigger, and the wire slider is in a limiting state against the capsule film; as shown Figure 15 As shown, the drive slide plate in the delivery handle continues to slide along the mounting base plate to the right and drives the puncture spring to stretch and complete energy storage, and the puncture needle is retracted, under the control of the trigger, and the wire slider is subsequently moved to tension the anchoring wire to support the capsule film on the outer wall of the prostate capsule, and the puncture spring is stretched to the original reset state. The delivery handle of the existing prostate implant has roughly the same operation steps as the above-mentioned patent technology, wherein the puncture spring is used to achieve the protrusion of the puncture needle during the piercing of the puncture needle into the lateral lobe of the prostate, and the puncture spring resistance needs to be overcome during the subsequent retraction of the puncture needle and the tensioning of the anchoring wire. Since the implantation of the prostate anchoring implant is carried out in stages, and a new set of prostate anchoring implants needs to be filled before the implantation of the next set of prostate anchoring implants can be carried out, it is unnecessary to tension the puncture spring during the retraction of the puncture needle and the tensioning of the anchoring wire. The increased resistance of the drive slide plate sliding to the right along the mounting base plate will cause difficulty in operation during the surgery. Practical new type content

[0004] The technical problem solved by the present application is that the drive slide plate in the delivery handle in the prior art has the problem of not being able to reset. The present application provides an elastic connection device with a reset function. The elastic connection device is connected with the puncture spring during the energy storage process of the puncture needle, and is disconnected from the puncture spring after the puncture spring is activated, so that the puncture needle does not need to overcome the stretching resistance of the puncture spring during the subsequent retraction process, greatly reducing the difficulty of retraction of the puncture needle.

[0005] Technical scheme: The elastic connection device with a reset function comprises a supporting column, a spring buckle and an elastic body.

[0006] The spring buckle comprises a buckle ring rotatably sleeved on the supporting column and a suspension part provided on the side wall of the buckle ring for suspending the puncture spring, and a limiting block is arranged on the side wall of the buckle ring opposite to the suspension part;

[0007] The elastic body is supported on the side wall of the limiting block and limits the opening direction of the suspension part.

[0008] Preferably, the support column comprises a column stem and a first mounting block fixedly connected to one end of the column stem, and a column end is arranged at the other end of the column stem, and a second mounting block is correspondingly arranged at one end of the column end.

[0009] Preferably, the elastic body is a torsion spring structure, comprising a limiting segment of a "∩" type structure clamped on one side of the limiting block, and torsion spring segments are integrally connected on the rod bodies on the two sides of the limiting segment and sleeved on the column stem, and the two torsion spring segments are arranged on the two sides of the spring buckle.

[0010] Preferably, the outer end of the torsion spring segment is bent to form a clamping segment.

[0011] The inner sides of the first mounting block and the second mounting block are respectively provided with clamping grooves for inserting the clamping segments.

[0012] The utility model discloses a kind of delivery handles for prostate anchoring implant, and the delivery handle includes elastic connecting device.

[0013] Compared with prior art, the utility model has the following beneficial effects:

[0014] The elastic connecting device of the utility model is connected with puncture spring tensioning in the puncture needle power storage process, and the elastic connecting device is disconnected with puncture spring after puncture spring excitation, so that puncture needle does not need to overcome the tensile resistance of puncture spring in subsequent retraction process, and the difficulty of puncture needle retraction is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the main view of the structure of the delivery system of the prostate implant in prior art;

[0016] Figure 2 It is the main view of the structure of the delivery system of the prostate implant in prior art; Figure 1 It is the main view of the structure of the delivery pipeline assembly in prior art;

[0017] Figure 3 It is the main view of the structure of the delivery pipeline assembly in prior art; Figure 2 It is the structure sectional view of delivery pipeline assembly A-A in prior art;

[0018] Figure 4 It is the structure sectional view of delivery pipeline assembly A-A in prior art; Figure 3 It is the schematic diagram of the explosion structure of puncture needle assembly in prior art;

[0019] Figure 5 It is the schematic diagram of the explosion structure of puncture needle assembly in prior art; Figure 1 It is the schematic diagram of the internal structure of delivery handle in prior art;

[0020] Figure 6 It is the schematic diagram of the internal structure of delivery handle in prior art;

[0021] Figure 7 It is the schematic diagram of the internal structure of delivery handle in prior art; Figure 6The middle puncture needle slider and the puncture needle push tube connection structure schematic diagram;

[0022] Figure 8 For Figure 6 The middle elastic connection device solid structure schematic diagram;

[0023] Figure 9 For Figure 8 The middle support shaft structure schematic diagram;

[0024] Figure 10 For Figure 8 The middle spring buckle solid structure schematic diagram;

[0025] Figure 11 For Figure 8 The middle elastomer solid structure schematic diagram;

[0026] Figure 12 The prostate implant is in the open state structure schematic diagram;

[0027] Figure 13 The front end of the delivery pipeline assembly output puncture needle puncture prostate process schematic diagram;

[0028] Figure 14 The delivery pipeline assembly retracts the puncture needle to release the capsule film and the anchor line process schematic diagram;

[0029] Figure 15 The delivery pipeline assembly releases the urethral piece and cuts off the anchor line process schematic diagram.

[0030] Figure 1, delivery handle; 11, handle box body; 12, installation base plate; 13, drive slide plate; 131, first spring hanging column; 132, needle slider; 133, line slider; 14, second spring hanging column; 15, puncture spring; 151, spring hanging ear; 2, delivery pipeline assembly; 21, main pipe body; 211, puncture needle shuttle tube slot; 22, puncture needle assembly; 221, puncture needle shuttle tube; 222, puncture needle push tube; 223, puncture needle; 3, capsule film push tube; 4, capsule film; 5, anchor line; 6, urethral end piece; 7, elastic connection device; 71, support column; 711, first installation block; 712, column rod; 713, column end; 714, clamping groove; 72, spring buckle; 721, buckle ring; 722, suspension part; 723, limiting block; 73, elastomer; 731, limiting section; 732, torsion spring section; 733, clamping section; 74, second installation block; 8, main body frame; 9, puncture needle slider; 91, spring connection column; 92, drive arm rod; 93, drive clamping block;

[0031] 01, bladder; 02, pubic bone; 03, urethra; 04, prostate; 05, prostate capsule. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the attached Figures 1-15 The technical scheme of the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.

[0033] As Figures 13-15 shown, the male lower abdomen of the man with prostate hyperplasia is shown in the coronal section view, the bladder 01 is a bubble structure for storing urine, located at the back side of the human pubis 02, the opening end is connected with the soft and elastic tubular structure as the urethra 03, the urine stored in the bladder is discharged from the front end of the penis through the urethra 03. The prostate 04 is located at the urethral periphery of the urethra 03 and the bladder 01, and the health status of the prostate 04 has an important influence on the normal function of the male reproductive system, for example, the prostate hyperplasia can squeeze the urethra 03, reduce the urethral passage, and can cause problems such as frequent urination, urgency, pain, sexual dysfunction, etc. The prostate capsule 05 is distributed on the outer wall of the prostate 04, and the prostate capsule 05 has a certain structural strength.

[0034] As Figure 12 shown, the anchor implant is used as a medical device for treating prostate hyperplasia minimally invasive surgery, usually including the capsule membrane piece 4 clamped outside the prostate capsule 05, the urethral end piece 6 clamped on the inner wall of the prostate urethra, and the anchor line 5 connecting the capsule membrane piece 4 and the urethral end piece 6, the urethral end piece 6 is pulled close to the capsule membrane piece 4 through the anchor line, so as to realize the expansion of the urethral stenosis position and dredge the urine discharge passage. The capsule membrane piece 4 in the prior art adopts a character structure, after the capsule membrane piece 4 is released outside the prostate capsule 05, the capsule membrane piece 4 and the anchor line 5 form a T-shaped structure, and when the urethral end piece 6 is released on the urethral side and fixedly clamped with the anchor line head to form an H-shaped structure.

[0035] Chinese patent 202311679703.7 discloses "a continuous prostate anchor delivery system", the delivery system of the prostate implant usually needs to cooperate with the delivery handle 1 and the delivery pipeline assembly 2 to realize the step-by-step implantation process of the prostate implant, wherein the delivery pipeline assembly 2 includes a main pipe body 21, a puncture needle assembly 22, an anchor line cutting system, an anchor implant and an imaging system, the puncture needle assembly is used for piercing the prostate capsule and releasing the capsule membrane piece of the implant, the anchor line cutting system is used for releasing the urethral end piece on the prostate urethral side and completing the tension cutting of the anchor line, and the specific implantation process of the implant is as Figures 13-15The delivery system includes a delivery handle 1, which includes a handle box body 11 including two pieces of side buckle cover buckled into a whole, between which an installation base plate 12 is fixedly clamped, one side of the installation base plate 12 is slidably connected with a driving slide plate 13, the driving slide plate 13 is provided with a needle slide block 132 and a wire slide block 133; a first spring hanging column 131 is arranged at the rear end of the driving slide plate 13, a second spring hanging column 14 is arranged at the front end of the installation base plate 12, a puncture spring 15 is connected between the first spring hanging column 131 and the second spring hanging column 14, and spring hanging ears 151 are arranged at both ends of the puncture spring 15, respectively.

[0036] As Figures 2-4 shown, the upper edge, shaft core and lower edge of the main pipe body 21 are respectively provided with a puncture needle shuttle pipe position slot 211, a mirror cavity and a tangent line shuttle pipe position slot along the length direction thereof, and the upper end of the puncture needle shuttle pipe position slot 211 and the lower end of the tangent line shuttle pipe position slot are in an open structure. The main pipe body 21 can satisfy the convenient layout of the puncture needle assembly 22, the imaging system and the anchor line cutting system. The puncture needle assembly 22 includes a puncture needle shuttle pipe 221 clamped in the puncture needle shuttle pipe position slot 211 and a puncture needle pushing pipe 222 slidably connected in the puncture needle shuttle pipe 221, the puncture needle pushing pipe 222 is connected with a puncture needle 223 at the front end thereof, the puncture needle 223 accommodates a capsule membrane piece 4 therein, the capsule membrane piece 4 is fixedly connected with an anchor line 5 at the rear end thereof, and a capsule membrane piece pushing pipe 3 is arranged in the puncture needle pushing pipe 222 at the rear end of the capsule membrane piece 4, and the anchor line 5 is accommodated in the capsule membrane piece pushing pipe 3. The puncture needle 223 advances to realize the puncture of the prostate lateral lobe under the pushing of the puncture needle pushing pipe 222 (as Figure 13 shown). The puncture needle 223 accommodates the capsule membrane piece 4 therein, and the capsule membrane piece 4 and the anchor line 5 are synchronously punctured to the prostate capsule 05 during the puncture of the puncture needle 223. When the puncture needle pushing pipe 222 is retracted backward and drives the puncture needle 223 to retract, the capsule membrane piece pushing pipe 3 moves forward relative to the puncture needle pushing pipe 222, so as to realize the release of the capsule membrane piece 4 on the outer wall of the prostate capsule 05 and the automatic expansion of the capsule membrane piece 4. After the expansion of the capsule membrane piece 4, the capsule membrane piece 4 and the anchor line 5 form a T-shaped structure, and then the capsule membrane piece pushing pipe 3 moves backward to pull back the anchor line 5, so as to tension the capsule membrane piece 4 on the outer wall of the prostate capsule 05 (as Figure 14 shown).

[0037] During operation, when the puncture needle in the delivery handle 1 is in the ready-to-fire state, the drive slide plate 13 is positioned to the far right relative to the mounting base 12, and the puncture spring 15 is in a stretched state, storing force for the puncture needle 223 to pierce. Controlled by the trigger, the drive slide plate 13 in the delivery handle 1 slides along the mounting base 12 under the action of the puncture spring 15, pushing the puncture needle push tube 222 to drive the puncture needle 223 to pierce the prostate lobe. At this time, the puncture spring 15 is in a relaxed state. Controlled by the trigger, the drive slide plate 13 in the delivery handle 1 slides to the right along the mounting base 12, driving the puncture spring... Spring 15 stretches and moves backward to store force, causing the puncture needle 223 to retract and retract. The line slider 133 is in a restrictive state on the prostate capsule 4. Maintaining the relatively contracted state of the capsule 4, the puncture needle 223 moves forward and extends beyond the prostate capsule 05. The trigger controls the drive slide 13 in the delivery handle 1 to continue sliding to the right along the mounting base 12, causing the puncture spring 15 to stretch and store force. The puncture needle 223 then retracts, and the line slider 133 moves backward to pull and tension the anchor line 5, supporting the capsule 4 on the outer wall of the prostate capsule 05. The puncture spring is then fully stretched and returns to its original reset state. The problem with this delivery handle is that after puncture, the puncture needle 223 needs to overcome the tension resistance of the puncture spring 15 during retraction, increasing the resistance of the drive slide 13 as it slides to the right along the mounting base 12, which can lead to difficulties during the procedure.

[0038] Chinese patent CN108095778B discloses a "handle for an anchor conveying system". This conveying handle has the same technical problems as the conveying handle disclosed in Chinese patent 202311679703.7. Its driving method for the conveying pipe assembly 2 is similar and will not be described in detail here.

[0039] Example 1: As Figures 8-11 As shown, in view of the technical problems existing in the surgical delivery of the handle in the prior art, the present invention provides an elastic connection device with a reset function. The elastic connection device 7 includes a support column 71, a spring buckle 72, and an elastic body 73. The spring buckle 72 includes a buckle ring 721 rotatably fitted on the support column 71 and a suspension part 722 provided on the side wall of the buckle ring 721 for suspending the puncture spring 15. The suspension part 722 can be an external hook or a slot with an opening on the outer wall of the buckle ring 721 to achieve a similar function. A limit block 723 is provided on the side of the buckle ring 721 opposite to the suspension part 722. The elastic body 73 can adopt a torsion spring structure, including a "∩"-shaped limiting section 731 that is snapped onto one side of the limiting block 723. The two rods on both sides of the limiting section 731 are integrally connected to torsion spring sections 732 that are fitted onto the column rod 712. The two torsion spring sections 732 are respectively located on both sides of the spring buckle 72. They are supported on the side wall of the limiting block 723 by the "∩"-shaped limiting section 731, providing power to the spring buckle 72 and thus limiting the opening direction of the suspension part 722.

[0040] In a preferred embodiment, as shown in Figures 8-9 The support column 71 comprises a column stem 712 and a first mounting block 711 fixedly connected to one end of the column stem 712, and a column end 713 is arranged at the other end of the column stem 712, and a second mounting block 74 is correspondingly arranged at one end of the column end 713, and the column stem 712 is correspondingly inserted into the second mounting block 74 through the column end 713. This arrangement of the support column 71 is convenient for connecting and mounting with the conveying handle through the first mounting block 711 and the second mounting block 74, and better limits the rotation of the support column 71 during the working process.

[0041] In a preferred embodiment, as shown in Figure 9 and Figure 11 The outer end of the torsional spring segment 732 is bent to form a clamping segment 733; the inner sides of the first mounting block 711 and the second mounting block 74 are respectively provided with a clamping groove 714 for inserting the clamping segment 733, that is, the elastic body 73 is correspondingly clamped between the first mounting block 711 and the second mounting block 74 through the clamping segment 733, thereby providing stable support for the limiting block 723 of the spring buckle 72.

[0042] Embodiment 2: The utility model also discloses a conveying handle for prostate anchor implant, conveying handle includes elastic connecting device. As shown in Figures 6-7 The main frame 8 and the puncture needle sliding block 9 slidingly connected on the main frame 8 are arranged at the tail end of the conveying pipeline assembly 2, the puncture needle sliding block 9 is provided with a spring connecting column 91 for connecting the puncture spring 15 at the top end, a driving arm rod 92 is arranged at the front end of the puncture needle sliding block 9, and the driving arm rod 92 is provided with a driving clamping block 93 connected with the puncture needle pushing pipe 222 on one side; during operation, the puncture needle sliding block 9 advances or retreats along the main frame 8, and the puncture needle 223 can be driven to advance and protrude or retreat and retract through the puncture needle pushing pipe 222. The elastic connecting device 7 is correspondingly arranged on the front upper side of the main frame 8, and the two spring lugs 151 of the puncture spring 15 are respectively hung on the hanging part 722 of the spring buckle 72 and the spring connecting column 91 of the puncture needle sliding block 9. In this embodiment, the elastic connecting device 7 is in tension connection with the puncture spring 15 during the puncture spring storage process, and after the puncture spring 15 is excited, the spring buckle 72 is rotated by a certain angle under the driving of the elastic body 73 due to the relaxation of the puncture spring 15 to the spring buckle 72, so that the opening of the hanging part 722 of the spring buckle 72 is offset and disconnected with the spring lug 151 of the puncture spring 15, thereby enabling the puncture needle sliding block 9 to be easily reset by moving right along the main frame 8, thereby greatly reducing the difficulty of retracting the puncture needle 223.

[0043] The elastic connecting device 7 can also be applied to the technical solutions disclosed in Chinese Patent CN108095778B and Chinese Patent 202311679703.7, for example, replacing the position of the second spring hanging column 14 at the front end of the mounting base plate 12. The elastic connecting device 7 is in tension connection with the puncture spring 15 during the puncture needle force storage process, and the elastic connecting device 7 is disconnected with the puncture spring 15 after the puncture spring 15 is triggered, so that the driving slide plate 13 is easily moved to the right along the mounting base plate 12 to reset, thereby greatly reducing the difficulty of retracting the puncture needle 223.

[0044] The above is the preferred embodiment of the present application. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A resilient connection device with a reset function, characterized in that, The elastic connecting device (7) comprises a supporting column (71), a spring buckle (72) and an elastic body (73); The spring buckle (72) comprises a buckle ring (721) rotatably sleeved on the supporting column (71) and a suspension part (722) provided on the side wall of the buckle ring (721) for suspending the elastic spring, and a limiting block (723) is arranged on the side wall of the buckle ring (721) opposite to the suspension part (722); The elastic body (73) is supported on the side wall of the limiting block (723) and limits the opening direction of the suspension part (722).

2. The elastic connection device with a reset function according to claim 1, characterized in that, The supporting column (71) comprises a column rod (712) and a first mounting block (711) fixedly connected to one end of the column rod (712), and a column end (713) is arranged at the other end of the column rod (712), and a second mounting block (74) is correspondingly arranged at one end of the column end (713).

3. The elastic connection device with a reset function according to claim 2, characterized in that, The elastic body (73) is a torsion spring structure, comprising a limiting section (731) of a "∩" type structure clamped on one side of the limiting block (723), and torsion spring sections (732) are integrally connected on the two side rods of the limiting section (731) and sleeved on the column rod (712), and the two torsion spring sections (732) are arranged on the two sides of the spring buckle (72).

4. The elastic connection device with a reset function according to claim 3, characterized in that, The outer end of the torsion spring section (732) is bent to form a clamping section (733); The inner sides of the first mounting block (711) and the second mounting block (74) are respectively provided with clamping grooves (714) for inserting the clamping section (733).

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