CN110215265B - Sleeve puncture needle for laparoscopic hepatectomy - Google Patents

Sleeve puncture needle for laparoscopic hepatectomy Download PDF

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Publication number
CN110215265B
CN110215265B CN201910512105.8A CN201910512105A CN110215265B CN 110215265 B CN110215265 B CN 110215265B CN 201910512105 A CN201910512105 A CN 201910512105A CN 110215265 B CN110215265 B CN 110215265B
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China
Prior art keywords
rod
puncture needle
sleeve
thread
slot
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Expired - Fee Related
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CN201910512105.8A
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Chinese (zh)
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CN110215265A (en
Inventor
郑璐
李靖
尤楠
吴柯
王峥
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Second Affiliated Hospital Army Medical University
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Second Affiliated Hospital Army Medical University
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Priority to CN201910512105.8A priority Critical patent/CN110215265B/en
Publication of CN110215265A publication Critical patent/CN110215265A/en
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Publication of CN110215265B publication Critical patent/CN110215265B/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421Cannulas
    • A61B17/3423Access ports, e.g. toroid shape introducers for instruments or hands
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B2017/348Means for supporting the trocar against the body or retaining the trocar inside the body
    • A61B2017/3482Means for supporting the trocar against the body or retaining the trocar inside the body inside
    • A61B2017/3484Anchoring means, e.g. spreading-out umbrella-like structure

Abstract

The invention discloses a cannula puncture needle for laparoscopic hepatectomy, which comprises a main body, a handle, a sleeve, an air valve, a cannula, a thread, an outlet, a puncture needle, a supporting mechanism and a connecting mechanism, wherein the rear end of the outer diameter surface of the cannula is provided with the thread, the outer diameter of the thread is provided with the supporting mechanism, after the puncture needle is inserted into the body of a patient, a knob is rotated to enable a ball bearing in the through hole to move on the thread, then the mechanism can move downwards, a fixed cylinder at the lower end of a connecting rod presses down the skin of the patient, a silica gel layer is arranged at the bottom of the fixed cylinder to provide stable support after contact, the needle is not easy to slide off, the air port and the air hole provide ventilation effect for the needle, the fixing effect is good, the connecting mechanism is arranged at the connecting position between the lower end of the handle and the puncture, convenient and fast, during the installation, only need to connect two sets of dead levers, the disect insertion inserted bar makes things convenient for the reuse of handle.

Description

Sleeve puncture needle for laparoscopic hepatectomy
Technical Field
The invention relates to the field of medical instruments, in particular to a trocar puncture needle for laparoscopic liver resection operation.
Background
The laparoscopic hepatectomy is a minimally invasive way for treating liver diseases, the treatment concept of the laparoscopic hepatectomy is the same as that of the traditional operation, the final purpose is to remove pathological changes, the difference is that the laparoscopic hepatectomy is to put a camera in the abdominal cavity, a doctor puts in surgical instruments by watching a television screen, the operation is carried out under the guidance of the camera, the hands of the doctor are always outside, the effect is the same as the operation of opening the abdomen, but has very small wound, relatively light postoperative pain, very quick recovery and very good treatment effect, before the laparoscope is inserted, a trocar puncture needle is needed to be penetrated into the body of a patient, then the puncture needle is taken out, the laparoscope can be inserted from the inside of the cannula, but the stability is lower after the laparoscope is inserted, the operation of the operation is easily influenced, and the puncture needle handle has higher cost, which causes poor recycling effect of the puncture needle handle.
Disclosure of Invention
Accordingly, in order to solve the above-mentioned disadvantages, the present invention provides a trocar puncture needle for laparoscopic liver resection.
The invention is realized in such a way that a sleeve puncture needle for laparoscopic hepatectomy is constructed, the device comprises a main body, a handle, a sleeve, an air valve, a sleeve, a thread, an outlet, a puncture needle, a support mechanism and a connecting mechanism, wherein the handle is arranged at the rear end of the main body, the sleeve is arranged on the front end surface of the handle, the left side of the sleeve is tightly fixed with the air valve, the air valve is communicated with the sleeve, the thread is arranged at the rear end of the outer diameter surface of the sleeve, the support mechanism is arranged on the outer diameter surface of the thread, the outlet is arranged at the tail end of the sleeve, the puncture needle is sleeved in the middle of the outlet, the top of the puncture needle is connected to the middle of the inside of the handle through the connecting mechanism, the support mechanism comprises a knob, a connecting plate, a support rod, a connecting rod, a fixed cylinder, a through, the terminal surface closely laminates there is the connecting rod before the branch, the terminal surface is connected with a solid fixed cylinder before the connecting rod, the through-hole is all seted up at knob and even inboard middle part, and is integrative through structure, in the sleeve pipe inserted into the through-hole, the ball bearing that corresponds each other is installed at both ends about in the through-hole to ball bearing internal diameter surface and screw thread intermeshing.
Preferably, the connecting mechanism comprises a rod body, a first fixing rod, a screw rod, an insert rod, a second fixing rod, a first slot, a first insert block, a second insert block and a second slot, the first fixing rod is arranged at the rear end of the rod body, the screw rod is vertically embedded into the rear end of the first fixing rod and is screwed into the handle tightly, the insert rod is arranged at the middle part in the rod body, the second fixing rod is connected to the front end of the insert rod, the first slot is formed in the upper end of the middle part in the first fixing rod, the first insert block is welded at the upper end of the left side of the first fixing rod, the second slot is formed in the right end of the second fixing rod, the second slot is spliced with the first insert block, the second insert block is welded at the upper end of the right side of the second fixing rod and is spliced with the first slot, and the first insert block and the second fixing rod are spliced with the first slot, The second insert block is connected with the second slot, the middle clamping groove in the first fixing rod and the second fixing rod is filled with the insert rod and then is of a wedge nail tenon structure, and the front end face of the second fixing rod is fixed with the puncture needle.
Preferably, the fixed cylinder comprises a cylinder body, a gas port, a silica gel layer and a gas hole, the gas port is formed in the outer diameter of the rear end in the cylinder body, the silica gel layer is bonded on the front end face of the cylinder body, the gas hole is formed in the middle in the silica gel layer, the gas hole and the gas port are of an integrated through structure, and the rear end of the cylinder body is fixed with the connecting rod.
Preferably, the outer surface of the knob is smooth, and four ends of the knob are all convex.
Preferably, the inner diameter of the through hole is larger than the outer diameter of the sleeve by 0.3 cm.
Preferably, the thread length is one third of the length of the sleeve, and the thread surfaces are chamfered.
Preferably, the inserted link, the first fixing link and the second fixing link are matched to form a cylinder.
Preferably, the gas port all is provided with five groups to five groups of gas ports evenly distributed are in the barrel upper end.
Preferably, the thickness of the silica gel layer is 2mm, and the surface of the silica gel layer is smooth.
Preferably, the supporting mechanisms are all made of 304 stainless steel.
Preferably, the silica gel layer is made of medical silica gel.
Preferably, the rod body is made of PP plastic.
The invention has the following advantages: the invention provides a trocar puncture needle for laparoscopic hepatectomy through improvement, which has the following improvements and advantages compared with the same type of equipment;
according to the sleeve puncture needle for laparoscopic hepatectomy, the rear end of the outer diameter surface of the sleeve is provided with the threads, the supporting mechanism is arranged on the outer diameter of the threads, after the puncture needle is inserted into the body of a patient, the knob is rotated to enable the ball bearing in the through hole to move on the threads, then the mechanism can move downwards, the skin of the patient is pressed down by the fixing cylinder at the lower end of the connecting rod, the bottom of the fixing cylinder is provided with the silica gel layer which provides stable support after contact and is not easy to slide off, the air port and the air hole provide ventilation effect for the puncture needle, the fixing effect is good, the connecting mechanism is arranged at the connecting position of the lower end of the handle and the puncture needle to push out the insertion rod in the middle of the rod body, the insertion blocks in the two groups of fixing rods can leave the insertion grooves, convenience and rapidness are realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of a needle design of the present invention;
FIG. 3 is a schematic view of the support mechanism of the present invention;
FIG. 4 is a schematic cross-sectional view of the support mechanism of the present invention;
FIG. 5 is a schematic view of the stationary barrel construction of the present invention;
FIG. 6 is a schematic view of the coupling mechanism of the present invention;
fig. 7 is a schematic view of a separate structure of the coupling mechanism of the present invention.
Wherein: the device comprises a main body-1, a handle-2, a sleeve-3, an air valve-4, a sleeve-5, a thread-6, a supporting mechanism-7, an outlet-8, a puncture needle-9, a connecting mechanism-10, a knob-71, a connecting plate-72, a support rod-73, a connecting rod-74, a fixed cylinder-75, a through hole-76, a ball bearing-77, a cylinder-751, an air port-752, a silica gel layer-753, an air hole-754, a rod body-101, a first fixed rod-102, a screw rod-103, an inserted rod-104, a second fixed rod-105, a first slot-106, a first inserted block-107, a second inserted block-108 and a second slot-109.
Detailed Description
The present invention will be described in detail below with reference to fig. 1 to 7, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a sleeve puncture needle for laparoscopic hepatectomy, which comprises a main body 1, a handle 2, a sleeve 3, an air valve 4, a sleeve 5, a thread 6, an outlet 8, a puncture needle 9, a support mechanism 7 and a connecting mechanism 10, wherein the handle 2 is arranged at the rear end of the main body 1, the sleeve 3 is arranged on the front end surface of the handle 2, the left side of the sleeve 3 is tightly fixed with the air valve 4, the air valve 4 is communicated with the sleeve 3, the thread 6 is arranged at the rear end of the outer diameter surface of the sleeve 5, the support mechanism 7 is arranged on the outer diameter surface of the thread 6, the outlet 8 is arranged at the tail end of the sleeve 5, the puncture needle 9 is sleeved at the inner middle part of the outlet 8, the top of the puncture needle 9 is connected to the inner middle part of the handle 2 through the connecting mechanism 10, the support mechanism 7 comprises a knob 71, a connecting plate 72, a, the four ends of the connecting plate 72 are protruded outwards, a supporting rod 73 is fixedly inserted into the center of the circle in the protruded part, a connecting rod 74 is tightly attached to the front end face of the supporting rod 73, a fixing cylinder 75 is connected to the front end face of the connecting rod 74, through holes 76 are formed in the middle of the knob 71 and the connecting plate 72 and are of an integrated through structure, the sleeve 5 is inserted into the through holes 76, ball bearings 77 corresponding to each other are installed at the upper end and the lower end in the through holes 76, and the inner diameter surfaces of the ball bearings 77 are meshed with the threads 6.
Further, the connecting mechanism 10 includes a rod body 101, a first fixing rod 102, a screw 103, an insertion rod 104, a second fixing rod 105, a first slot 106, a first insertion block 107, a second insertion block 108 and a second slot 109, the first fixing rod 102 is disposed at the rear end of the rod body 101, the screw 103 is vertically embedded at the rear end of the first fixing rod 102, the screw 103 is tightly screwed into the handle 2, the insertion rod 104 is disposed at the middle portion of the rod body 101, the second fixing rod 105 is connected to the front end of the insertion rod 104, the first slot 106 is disposed at the upper end of the middle portion of the first fixing rod 102, the first insertion block 107 is welded at the upper end of the left side of the first fixing rod 102, the second slot 109 is disposed at the right end of the second fixing rod 105, the second insertion block 108 is welded at the upper end of the right side of the second fixing rod 105, and the second insertion block 108 is inserted into the first slot 106, the first fixing rod 102 and the second fixing rod 105 are connected through a first slot 106, a first inserting block 107, a second inserting block 108 and a second slot 109, the middle clamping grooves in the first fixing rod 102 and the second fixing rod 105 are filled into the inserting rod 104 and then are in a wedge tenon structure, and the front end face of the second fixing rod 105 is fixed with the puncture needle 9.
Further, the fixing cylinder 75 comprises a cylinder 751, an air port 752, a silica gel layer 753 and an air hole 754, the air port 752 is formed in the outer diameter of the inner rear end of the cylinder 751, the silica gel layer 753 is bonded to the front end face of the cylinder 751, the air hole 754 is formed in the middle of the inner portion of the silica gel layer 753, the air hole 754 and the air port 752 form an integral through structure, the rear end of the cylinder 751 is fixed with the connecting rod 74, and the fixing effect is good and the stability is strong.
Furthermore, the outer surface of the knob 71 is smooth, and four ends of the knob 71 are convex, so that the knob is convenient to rotate and convenient and fast.
Furthermore, the inner diameter of the through hole 76 is larger than the outer diameter of the sleeve 5 by 0.3cm, the sliding effect is good, and the sleeve is not blocked.
Furthermore, the length of the thread 6 is one third of that of the sleeve 5, chamfers are arranged on the surfaces of the thread 6, the sliding effect is good, and the stability is good.
Further, the insertion rod 104, the first fixing rod 102 and the second fixing rod 105 are matched to be cylindrical, so that the insertion is facilitated inside the casing 5.
Furthermore, the air ports 752 are provided with five groups, and the five groups of air ports 752 are uniformly distributed at the upper end of the cylinder 751, so that the ventilation efficiency is high, and the effect is good.
Further, the thickness of the silica gel layer 753 is 2mm, and the surface of the silica gel layer 753 is smooth, so that the silica gel layer is anti-skidding and good in stability.
Furthermore, the supporting mechanisms 7 are all made of 304 stainless steel.
Figure GDA0002578177610000051
As shown in the table above, the supporting mechanisms 7 of the invention are all made of 304 stainless steel, so that the effects of sanitation and good color can be achieved
Further, the silica gel layer 753 is made of medical silica gel.
Figure GDA0002578177610000052
As shown in the table above, the silica gel layer 753 of the present invention employs medical silicone rubber, which can achieve the effects of sanitation and environmental protection
Further, the rod body 101 is made of a PP plastic material.
Figure GDA0002578177610000053
As shown in the above table, the body 101 of the present invention is made of PP plastic, so as to achieve the effects of environmental protection and no choking smell
The invention provides a cannula puncture needle for laparoscopic liver resection operation through improvement, which operates according to the following mode;
when the device needs to be used, firstly, the puncture position of a patient is disinfected, then, force is applied to puncture the puncture needle 9 into the body of the patient, redundant gas is discharged through the gas valve 4, then, an operator tightly holds the handle 2 to pull out the puncture needle 9, then, when the laparoscope is inserted, the thread 6 on the outer diameter surface of the sleeve 5 is provided with the supporting mechanism 7, the knob 71 is arranged in the supporting mechanism 7, a user rotates the knob 71, when the knob 71 rotates, the knob 71 and the ball bearing 77 in the through hole 76 in the connecting plate 72 can rotate on the thread 6, so that stable downward movement can be realized, the lower end of the mechanism is provided with the connecting rod 74, the bottom of the connecting rod 74 is provided with the fixed cylinder 75, when the bottom of the fixed cylinder 75 is contacted with the skin of the patient, the silica gel layer 753 is bonded at the bottom, the friction force of the silica gel, the air port-752 and the air hole-754 in the fixing cylinder 75 enable the skin contacted with a patient to be ventilated, so that good fixing is realized, the sleeve 5 cannot shake in operation, then the sleeve can be inserted into a laparoscope to the sleeve 5, then the sleeve enters the body of the patient, observation of a laparoscopic hepatectomy operation is started, the connecting mechanism 10 is arranged at the connecting position of the lower end of the handle 2 and the puncture needle 9, the inserting rod 104 in the middle of the rod body 101 is pushed out, the first inserting block 107 and the second inserting block 108 in the first fixing rod 102 and the second fixing rod 105 can leave the first inserting groove 106 and the second inserting groove 109, the fixing is convenient and quick, and during installation, only two groups of fixing rods need to be connected, the inserting rod 104 is directly inserted, and the handle is convenient to recycle.
The invention provides a sleeve puncture needle for laparoscopic hepatectomy by improvement, through opening a thread 6 at the rear end of the outer diameter surface of a sleeve 5, installing a supporting mechanism 7 at the outer diameter of the thread 6, after a puncture needle 9 is inserted into the body of a patient, rotating a knob 71 to enable a ball bearing 77 in a through hole 76 to move on the thread 6, then moving the mechanism downwards, pressing the skin of the patient on a fixed cylinder 75 at the lower end of a connecting rod 74, arranging a silica gel layer 753 at the bottom of the fixed cylinder 75 to provide stable support after contact, not easy to slide off, providing ventilation effect for the air port and an air vent 754, having good fixing effect, arranging a connecting mechanism 10 at the connecting position of the lower end of a handle and the puncture needle 9, pushing out an inserted rod 104 at the middle part in a rod body 101, enabling an inserted block in two groups of fixed rods to leave slots, being convenient and fast, only, the inserted bar is directly inserted, so that the handle can be reused conveniently.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A cannula puncture needle for laparoscopic hepatectomy comprises a main body (1), a handle (2), a sleeve (3), an air valve (4), a cannula (5), a thread (6), an outlet (8) and a puncture needle (9), a handle (2) is arranged at the rear end of the main body (1), a sleeve (3) is arranged on the front end surface of the handle (2), the left side of the sleeve (3) is tightly fixed with an air valve (4), the air valve (4) is communicated with the sleeve (3), the rear end of the outer diameter surface of the sleeve (5) is provided with a thread (6), a supporting mechanism (7) is arranged on the outer diameter surface of the thread (6), an outlet (8) is arranged at the tail end of the sleeve (5), a puncture needle (9) is sleeved in the middle inside the outlet (8), and the top of the puncture needle (9) is connected to the middle inside the handle (2) through a connecting mechanism (10);
the method is characterized in that: the device is characterized by further comprising a supporting mechanism (7) and a connecting mechanism (10), wherein the supporting mechanism (7) comprises a knob (71), a connecting plate (72), a supporting rod (73), a connecting rod (74), a fixed cylinder (75), a through hole (76) and a ball bearing (77), the front end of the knob (71) is tightly attached with a connecting plate (72), four ends of the connecting plate (72) are protruded outwards, a supporting rod (73) is fixedly inserted at the center of the outer convex inner circle, a connecting rod (74) is tightly attached to the front end surface of the supporting rod (73), the front end surface of the connecting rod (74) is connected with a fixed cylinder (75), the through holes (76) are all arranged in the middle of the inner parts of the knob (71) and the connecting plate (72), and is of an integral through structure, the sleeve (5) is inserted into the through hole (76), the upper end and the lower end in the through hole (76) are provided with ball bearings (77) which are corresponding to each other, and the inner diameter surface of the ball bearing (77) is engaged with the screw thread (6).
2. The trocar puncture needle for laparoscopic hepatectomy according to claim 1, wherein: the connecting mechanism (10) comprises a rod body (101), a first fixing rod (102), a screw rod (103), an insert rod (104), a second fixing rod (105), a first slot (106), a first insert block (107), a second insert block (108) and a second slot (109), wherein the first fixing rod (102) is arranged at the rear end of the rod body (101), the screw rod (103) is vertically embedded at the rear end of the first fixing rod (102), the screw rod (103) is tightly screwed into the handle (2), the insert rod (104) is arranged in the middle of the rod body (101), the second fixing rod (105) is connected at the front end of the insert rod (104), the first slot (106) is formed in the upper end of the middle of the first fixing rod (102), the first insert block (107) is welded at the upper end of the left side of the first fixing rod (102), the second slot (109) is formed in the right end of the second fixing rod (105), and the second slot (109) is inserted into the first insert block (107), second inserted block (108) are welded at the upper end of the right side of second fixed rod (105), and second inserted block (108) is spliced with first slot (106), first fixed rod (102) and second fixed rod (105) are connected through first slot (106), first inserted block (107), second inserted block (108) and second slot (109), and first fixed rod (102) and second fixed rod (105) are filled with middle clamping grooves and then are wedge nail tenon structures after inserted rod (104), and the front end face of second fixed rod (105) is fixed with puncture needle (9).
3. The trocar puncture needle for laparoscopic hepatectomy according to claim 1, wherein: the fixing barrel (75) comprises a barrel body (751), an air port (752), a silica gel layer (753) and air holes (754), the air port (752) is formed in the outer diameter of the inner rear end of the barrel body (751), the silica gel layer (753) is bonded on the front end face of the barrel body (751), the air holes (754) are formed in the middle of the inner portion of the silica gel layer (753), the air holes (754) and the air port (752) form an integral through structure, and the rear end of the barrel body (751) is fixed with the connecting rod (74).
4. The trocar puncture needle for laparoscopic hepatectomy according to claim 1, wherein: the outer surface of the knob (71) is smooth, and four ends of the knob (71) are all convex.
5. The trocar puncture needle for laparoscopic hepatectomy according to claim 1, wherein: the inner diameter of the through hole (76) is larger than the outer diameter of the sleeve (5) by 0.3 cm.
6. The trocar puncture needle for laparoscopic hepatectomy according to claim 1, wherein: the length of the thread (6) is one third of that of the sleeve (5), and chamfers are arranged on the surfaces of the thread (6).
7. The trocar puncture needle for laparoscopic hepatectomy according to claim 2, wherein: the inserted bar (104), the first fixing bar (102) and the second fixing bar (105) are matched to form a cylinder.
8. The trocar puncture needle for laparoscopic hepatectomy according to claim 3, wherein: the gas ports (752) are all provided with five groups, and the five groups of gas ports (752) are uniformly distributed at the upper end of the cylinder body (751).
9. The trocar puncture needle for laparoscopic hepatectomy according to claim 3, wherein: the thickness of the silica gel layer (753) is 2mm, and the surface of the silica gel layer (753) is smooth.
CN201910512105.8A 2019-06-13 2019-06-13 Sleeve puncture needle for laparoscopic hepatectomy Expired - Fee Related CN110215265B (en)

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