CN216754589U - Single rotary electric cutter - Google Patents

Abstract

The utility model discloses a single rotary electric cutter which comprises: the electrode rod and the electrode sleeve can rotate relative to the supporting sleeve through the rotary sleeve, and a trigger on the handle is operated to enable the hydraulic driving system to control the stretching of the cutting electrode through the electrode rod. The cutting electrode can be flexibly and accurately adjusted after extending out in the treatment process, the treatment effect is better, and the operation process is safer. The utility model is used as a single type electric cutting instrument, and provides more convenient conditions for operation.

Description

Single rotary electric cutter

Technical Field

The utility model relates to an electric cutting instrument in hysteroscopic surgery and urinary surgery operation treatment, in particular to a single rotary electric cutter.

Background

In the uterine cavity resectoscope, an resectoscope such as a resectoscope ring and a resectoscope needle is usually wrapped with an endoscope into a whole, and in the uterine cavity treatment process, in order to avoid damage to parts such as a cutting electrode of the resectoscope (for example, when the cutting electrode enters and exits from an external opening, a cervical canal and an internal opening of a cervix), the resectoscope ring and the resectoscope needle need to be retracted into the resectoscope, so that the resectoscope has a thick caliber, the cervix needs to be expanded to 8-11mm in use, and the cervix is easily damaged, and cervical insufficiency is caused after operation. Meanwhile, the electric cutting instrument can only be driven to rotate by integrally rotating the electric cutting scope in the operation, so that the operation flexibility of the electric cutting instrument is poor, the movement of the electric cutting instrument and the adjustment of the observation visual field of the endoscope cannot be independently carried out, and the electric cutting instrument is also far away from a treatment part along with the endoscope along with the expansion of the observation visual field, so that the treatment on the intrauterine adhesion and the uterine deformity is not facilitated. Because the angle of the electrotomy instrument cannot be independently adjusted in the electrotomy treatment, when polyps, intrauterine adhesion and submucosal myoma are found in the uterine cavity in the hysteroscopy process, the electrotomy operation is complex, the required electrotomy time is increased along with the increase of focus (such as large submucosal myoma), the probability of complication hyponatremia and water poisoning is obviously increased, and the difficulty in carrying out the hysteroscopy operation in outpatient clinic is increased.

With the proposal of the single type electrotomy instrument, the cross-sectional area of the internal opening of the cervix can be more effectively utilized by adopting the method that the hysteroscopy lens and the electrotomy instrument are separated to enter the uterine cavity, thereby reducing the uterus dilatation and considering the operation visual field during treatment and the integral observation requirement of the uterine cavity. For the single type electric cutting instrument, in order to better perform clinical application in the hysteroscopy operation, higher requirements are made on the flexibility and the safety of the instrument. For example, in chinese patent CN111904472A (a single-body uterine cavity electric cutting device), a pull wire and a tension wire are used to fold and unfold a cutting electrode, but the cutting electrode is still in an exposed state, and it is difficult to completely avoid the friction with normal tissues when entering and exiting the uterine cavity. In chinese patent CN212788680U (a needle-shaped ablation electrode), the slider outside the needle cylinder and the needle clamping tube at the end part are used to fix the retraction position of the cutting electrode (tungsten needle), but the retraction operation of the electrode needle can only be performed outside the body, and the ablation incision direction of the electrode needle cannot be flexibly adjusted. In the chinese patent CN105125282A (a charged hook flushing aspirator), the sliding and rotating structure integration design of the insulating sleeve is realized by using the rotary disc, the limiting ring, the restraining protrusion and the stepped positioning sliding groove, but the flexibility of the retracting operation of the cutting electrode (charged hook) is not enough, and the operation is not suitable for one-hand operation. The current single type electric cutting instrument does not fully exert the advantages of the single type electric cutting instrument in the treatment effect.

For the electric resectoscope of urinary surgery, the requirements on the safety, flexibility and treatment efficiency of the instrument are also higher.

Disclosure of Invention

The utility model aims to provide a single rotary electric cutter.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the electric cutter comprises a cutting electrode, a hydraulic driving system, a supporting sleeve, a rotary sleeve arranged on the supporting sleeve, an electrode sleeve and an electrode rod (the electrode sleeve is positioned outside the electrode rod), wherein the electrode sleeve and the electrode rod can synchronously rotate with the rotary sleeve, one end of the electrode rod is connected with the cutting electrode, and the other end of the electrode rod is connected with the hydraulic driving system.

Preferably, the electrode sheath comprises a detachable tube section (as a front section of the electrode sheath) and a fixed tube section (as a rear section of the electrode sheath) connected to the detachable tube section (e.g., by a screw thread), the fixed tube section is connected to the rotary sleeve, and the cutting electrode is extended from or retracted into the electrode sheath through the detachable tube section by manually operating the hydraulic drive system, thereby further improving the safety of the operation of the electric cutter in hysteroscopic and urological surgery (particularly the latter) treatments.

Preferably, the hydraulic driving system comprises a hydraulic axial linkage mechanism and a hydraulic sleeve led out from the interior of the supporting sleeve, a hydraulic medium is arranged in the hydraulic sleeve, and the hydraulic axial linkage mechanism is respectively matched with the electrode rod and the hydraulic medium in the hydraulic sleeve.

Preferably, the hydraulic axial linkage mechanism comprises a connecting rod, a slip sheet arranged at one end of the electrode rod (the cutting electrode is connected to the other end of the electrode rod) and a piston arranged at one end of the hydraulic sleeve, the piston is connected with the slip sheet through the connecting rod, and the piston is in contact with a hydraulic medium in the hydraulic sleeve.

Preferably, the sliding piece is provided with a sliding block, and the sliding block is matched with an axial sliding groove (i.e. the sliding block is connected with the axial sliding groove and can slide relatively) arranged on the inner wall of the electrode sleeve (particularly the fixed tube section).

Preferably, a clamping groove is formed in the rotary sleeve, and the electrode sleeve (particularly, the fixed pipe body section) is fixed with the rotary sleeve through the clamping groove.

Preferably, the hydraulic driving system further comprises a pressure regulating trigger, the pressure regulating trigger comprises a pressure cap, a pressure rod and a pressure block, the pressure block is arranged at the other end of the hydraulic sleeve, the pressure cap is respectively connected with one end of the pressure rod and a spring arranged on the outer side of the corresponding end of the hydraulic sleeve, and the other end of the pressure rod is connected with the pressure block; or the pressure regulating trigger comprises a pressure cap and a pressing block, the pressing block is arranged at the other end of the hydraulic sleeve, the top of the pressure cap is opposite to the pressing block, and the inner side surface of the pressure cap is tightly attached to the hydraulic sleeve. The pressure block is contacted with the hydraulic medium in the hydraulic sleeve.

Preferably, the hydraulic driving system further comprises a handle, the supporting sleeve is connected with the handle, the hydraulic sleeve extends from the inside of the supporting sleeve to the handle and the rotating sleeve respectively, one end of the hydraulic sleeve is fixed in the rotating sleeve, and the other end of the hydraulic sleeve is fixed on the handle.

Preferably, the rotary sleeve comprises a front sleeve body and a rear sleeve body which are connected with each other, a threading hole communicated with the electrode sleeve (particularly a fixed tube body section) is formed in the front sleeve body, a thread hole plug is arranged in the threading hole (the function includes that a lead and the rotary sleeve are fixed together to avoid winding and breaking, and the function of sealing the lead to be connected with the position of the electrode rod), and a driving plate (used for adjusting the rotation angle of the rotary sleeve under the operation of a finger so as to conveniently, quickly and accurately switch the cutting direction of the cutting electrode at a treatment part and obtain a larger treatment effect in single electrotomy) is arranged on the rear sleeve body.

Preferably, the support sleeve is provided with a bearing, and the rotating sleeve (particularly, the rear sleeve body) is connected with the support sleeve through the bearing.

Preferably, the cutting electrode is in the shape of a needle, a ring or a hook, and the size of the cutting electrode is enough to extend out of or retract into the electrode sleeve along with the movement of the electrode rod under the action of a hydraulic driving system.

The utility model has the beneficial effects that:

according to the electric cutter, the hydraulic driving system and the rotary sleeve are introduced, so that the cutting direction of the cutting electrode can be flexibly adjusted under the single-hand operation, and the treatment effect is improved; meanwhile, the cutting electrode can flexibly stretch when the front end of the electric cutter is positioned in the space of a human body cavity such as a uterine cavity, the efficiency and the accuracy of single-hand operation (another hand holds an independent uterine cavity examination mirror in a hysteroscope operation) on the electric cutter in the operation are improved, the safety of electric cutting treatment (especially when the electric cutter is taken in and out) is effectively ensured, and the damage to normal tissues is avoided.

Drawings

FIG. 1 is a schematic view showing the external structure of a single rotary uterine cavity electric cutter in example 1 (with the cutting electrode retracted);

FIG. 2 is a schematic view showing the internal structure of the single rotary uterine cavity electric cutter in example 1 (with the cutting electrode extended);

FIG. 3 is an enlarged view of a portion (region I) of FIG. 2;

FIG. 4 is a schematic view (end face) of the assembly of the neck of FIG. 3 with the electrode rod and the electrode sleeve;

FIG. 5 is a schematic view showing the structure of a trigger in embodiment 1;

FIG. 6 is the external structure of the single rotary urological resector in example 3 (the front and rear sections of the electrode sleeve are separated, and the internal electrode rod is omitted);

FIG. 7 is a schematic view of the front section of the electrode sheath and the closer shown in FIG. 6 assembled together;

in the figure: 1-cutting electrode, 2-electrode rod, 3-electrode sleeve, 4-front sleeve, 5-lead, 6-rear sleeve, 7-hydraulic medium, 8-hydraulic sleeve, 9-supporting sleeve, 10-handle, 11-trigger, 1101-pressing cap, 1102-pressing rod, 1103-pressing block, 12-clamping groove, 13-bearing, 14-hydraulic axial linkage mechanism, 141-connecting rod, 142-sliding sheet, 15-wire hole plug, 16-threaded interface and 17-closer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model.

Example 1

The uterine cavity examination system of the resectoscope is separated from the resectoscope system, and the structure of the resectoscope system is improved, so that a single-body resectoscope system (such as a single-body rotary uterine cavity resectoscope) is formed, a cutting electrode of the resectoscope system can be effectively prevented from being rubbed with tissues in the uterine cavity in and out, and meanwhile, under the cooperation of the resectoscope, the resectoscope system can play a treatment role in a larger range, so that the female can be better treated by utilizing the physiological structure of the female, the treatment difficulty and cost can be reduced, and the pain degree of patients can be reduced.

Referring to fig. 1 and 2, the single rotary uterine cavity electric cutter comprises a cutting electrode 1 (such as a needle electrode), an electrode rod 2, an electrode sleeve 3, a rotary sleeve, a lead 5, a support sleeve 9 and a handheld hydraulic driving system. The electrode rod 2 and the electrode sleeve 3 can rotate relative to the supporting sleeve 9 through the rotating sleeve, the main body of the electrode rod 2 is positioned in the electrode sleeve 3, the front end of the electrode rod is connected with the cutting electrode 1, and the rear end of the electrode rod and the electrode sleeve 3 extend into the rotating sleeve; the rotating sleeve is provided with a rotating disc (called a drive plate for short) for being pushed by fingers. One end of the lead 5 is introduced into the rotating sleeve to supply power (an energy source for the electro-ablative treatment) to the cutting electrode 1. The hand-held hydraulic driving system comprises a hydraulic sleeve 8, a handle 10 and a trigger 11; the hydraulic medium 7 is injected into the hydraulic sleeve 8, the horizontal straight pipe section at the front part of the hydraulic sleeve 8 is fixed in the support sleeve 9, the rear part of the hydraulic sleeve 8 is bent downwards and then extends into the handle 10, the lower end part of the hydraulic sleeve 8 is fixed at the position of the trigger 11 arranged on the handle 10, and the upper end part of the hydraulic sleeve 8 extends into the rotary sleeve and keeps a fixed state.

Referring to fig. 3, the rotating sleeve is composed of a front sleeve body 4 (cylindrical) and a rear sleeve body 6 (conical, which facilitates the shifting of a turntable thereon) which are connected into a whole, a clamping groove 12 is formed in the inner parts of the rotating sleeve, and the rear part of the electrode sleeve 3 is fixed in the clamping groove 12. The front sleeve body 4 is provided with a radial through hole (namely a threading hole) which penetrates through the clamping groove 12 and the upper side face of the electrode sleeve 3, and a threading hole plug 15 is arranged in the through hole so as to conveniently install the fixed lead 5 and take sealing into consideration. The rear sleeve body 6 is coaxially connected with a bearing 13 arranged on the supporting sleeve 9, and the hydraulic sleeve 8 penetrates through the center of the bearing 13.

As shown in fig. 4, the handheld hydraulic driving system further includes a hydraulic axial linkage mechanism 14, the hydraulic axial linkage mechanism 14 includes a connecting rod 141, a sliding piece 142 and a piston body, the piston body is installed in an upper end portion (having an end cover to prevent the piston body from coming off) of the hydraulic sleeve 8 and forms a piston structure, a rear end of the connecting rod 141 is connected to the piston body (a connecting position of the connecting rod and an acting position of a hydraulic medium are respectively located at two sides of the piston body), the piston body is sealed by an end portion to take account of the hydraulic action and flexibility of relative rotation between the piston body and the hydraulic sleeve 8, and a front end of the connecting rod 141 is connected to a center of the sliding piece 142.

As shown in fig. 4, the upper and lower ends of the sliding piece 142 are fixed with sliding blocks, the sliding blocks are embedded into axial sliding grooves at the corresponding circumferential positions on the inner wall of the rear portion of the electrode sleeve 3, so that the electrode rod 2 connected with the sliding piece 142 is ensured to only move horizontally but not rotate relative to the electrode sleeve 3, and the piston body can rotate, thereby structurally considering the synchronous rotation of the electrode rod 2 and the electrode sleeve 3 and the linear movement of the electrode rod 2, so that the function of a hydraulic driving system (driving the electrode rod to drive the cutting electrode to extend out or retract from the front end of the electrode sleeve) and the function of a rotating sleeve (especially, the rotating angle can be flexibly adjusted when the cutting electrode extends out) are integrated.

As shown in fig. 4, a strip-shaped protruding strip is fixed on the outer wall of the rear portion of the electrode sleeve 3 at an interval of 90 degrees from the axial sliding groove, so that the electrode sleeve 3 can be aligned, assembled and fixed in the clamping groove 12 conveniently.

Referring to fig. 5, the trigger 11 includes a pressing cap 1101, a pressing rod 1102 and a pressing block 1103, the pressing block 1103 is filled in the lower end portion of the hydraulic sleeve 8, the center of the top of the pressing cap 1101 is fixed to one end of the pressing rod 1102, the edge of the bottom of the pressing cap 1101 (i.e., the side overlapping with the hydraulic sleeve 8 in fig. 5) is abutted with a spring, the spring is fixed to the handle 10 and sleeved outside the portion of the hydraulic sleeve 8 extending out of the handle 10 (including the lower end portion), and the other end of the pressing rod 1102 is fixed to the pressing block 1103. When the pressing cap 1101 pushes the pressing block 1103 to move the hydraulic medium 7 to the right, the piston structure exhausts gas from the end cover, and the piston body pushes the electrode rod 2 to move outwards (to make the cutting electrode 1 extend out of the electrode sleeve 3), once the pressing cap 1101 is released, the pressing cap 1101 drives the pressing block 1103 to reset under the cooperation of the restoring force of the spring, the external atmosphere is filled into the piston structure, and the piston body pulls the electrode rod 2 to move inwards (to make the cutting electrode 1 retract into the electrode sleeve 3).

Example 2

Unlike embodiment 1, the trigger 11 does not include the pressing rod 1102, but mainly uses the airtightness of the overlapping portion of the pressing cap 1101 and the hydraulic sleeve 8 (i.e., seals the gas in the space surrounded by the pressing cap 1101 outside the pressing body 1103). The piston body movement (pushing, pulling) is achieved by the pressure difference of the gas at both ends of the hydraulic medium 7.

The treatment process of the single rotary uterine cavity electric cutting device is as follows:

when the lesion sites such as uterine polyps, intrauterine adhesion, submucosal myoma and the like which need to be cut electrically are detected, the electric cutter is operated under the hysteroscope for treatment. The handle 10 is gripped, the front end position of the electrode sleeve 3 is adjusted according to the required incision position and depth, when the power-on treatment is required, the trigger 11 is pressed firstly, the electrode 1 to be cut extends out, the incision direction of the electrode 1 is adjusted through the rotary sleeve, the electrode plate is stepped by feet, current is led into the electrode 1 through the lead 5, the handle 10 and the trigger 11 can be utilized to pull back or push forwards in the power-on cutting process, the incision direction of the electrode 1 can be adjusted repeatedly through the rotary sleeve, and therefore the focus is subjected to power-on treatment by the electrode 1 under the power-on state, and the treatment effect is achieved quickly.

When the utility model is used in combination with a hysteroscope for treatment, the cross-sectional area of an examination mirror with the mirror body diameter of about 5mm is 6.25 pi mm²And a monolithic electrotomy system (specifically the electrotome in the above embodiment) having an electrode structure diameter of about 4mm and a cross-sectional area of 4 π mm²For most patients, the uterine orifice is about 6mm, so that the uterine dilatation is basically not needed (the uterine orifice is pulled into an oval shape), and the injury to the cervix of the patient can be correspondingly reduced to the minimum if the uterine dilatation is smaller or even not. Furthermore, the uterusThe cavity inspectoscope and the single-body type electrotomy system can complete electrotomy treatment without the limitation of a speculum and a cylindrical metal package, and have wider visual field and wider range of motion.

The single rotary uterine cavity electric cutter provided by the embodiment has the following characteristics:

the electric cutter does not need to expand the uterus or reduce the size of the uterus when passing in and out of the uterine cavity, the electric cutter can still easily pass in and out of the uterine cavity, the damage to the cervix is small, and the cutting electrode is not easy to damage. In the hysteroscopic treatment, the hysteroscopy scope and the electric cutter can be respectively held, and the operation (the electric cutter can be independently fed in) can be completed by mutual cooperation, not only can the operation of the excision operation (polyp existing in the uterine cavity, uterine cavity adhesion and submucous myoma) of the focus (flexible and accurate adjustment can be realized on the incision direction after the incision electrode is stretched out in the treatment) in a certain visual field be continuously completed by a doctor, so that the operation in the treatment process is simple, and a good treatment effect is achieved, but also the operation process is safer (for example, when the electric cutter is taken out, the incision electrode can be completely retracted into the electrode sleeve by releasing a trigger, so that the electric cutter is easily taken out from the uterine cavity, and normal tissue damage is not easily caused). Meanwhile, the popularization and the application of the electric cutter can also reduce the cost of the instrument (the price of the existing integrated electric cutter is far higher than that of a single electric cutter), the treatment cost and the treatment time, relieve the pain degree of treatment and reduce the risk of complications, thereby finishing the corresponding operation in an outpatient clinic.

Example 3

Since the male urethra is thin and has three narrow areas on the cavity structure, if the electric cutter in the above embodiment is directly fed, the front end opening of the electrode sleeve 3 is easy to enter the cavity tissue, thereby increasing the entering difficulty of the electric cutter and being easy to damage the normal tissue, it is therefore necessary to use a closure 17 as shown in fig. 7 when entering the electric cutter, and to separate the electrode casing 3 of the electric cutter proposed in the above embodiment from one tubular structure into two sections of tubular structures (the latter tubular structure being slightly longer than the rear part of the electrode casing so as to separate and abut the two sections of tubular structures of the electrode casing outside the rotary sleeve while ensuring that the former tubular structure has a sufficient length so as to manually separate the closure outside the lumen structure), thereby forming a single rotary urological electric cutter as shown in fig. 6.

In the monomer rotary urinary electric cutter, the front section and the rear section of the electrode sleeve 3 adopt threaded interfaces 16 at the butt joint ends of the front section and the rear section. When the electrotomy operation needs to be started, the front section of the electrode sleeve 3 is screwed down, the closer 17 is inserted from the butt joint end of the front section of the electrode sleeve 3, a bullet-shaped cap body of the closer 17 extends out of a part or all of the other end of the front section of the electrode sleeve 3 (namely the front end of the electrode sleeve 3), so that the front end of the electrode sleeve 3 is closed by the cap body, the front section of the electrode sleeve 3 is sent into the urethra and reaches the prostate, the bladder and the like, then the closer 17 is separated, and the cutting electrode 1, the electrode rod 2 (connected to the rotating sleeve through the rear section of the electrode sleeve) and the observation mirror attached to the electrode rod 2 enter along the front section of the electrode sleeve 3 until the front section and the rear section of the electrode sleeve 3 can be screwed. The electrotomy treatment can then be carried out with reference to the above example.

Claims (10)

1. A monomer rotation type electroscope which characterized in that: the electric cutter comprises a cutting electrode (1), a hydraulic driving system, a supporting sleeve (9), a rotary sleeve arranged on the supporting sleeve (9), an electrode sleeve (3) and an electrode rod (2), wherein the electrode sleeve and the electrode rod can synchronously rotate with the rotary sleeve, one end of the electrode rod (2) is connected with the cutting electrode (1), and the other end of the electrode rod is connected with the hydraulic driving system.

2. The one-piece rotary electrical cutter according to claim 1, wherein: the electrode sleeve (3) comprises a detachable pipe body section and a fixed pipe body section connected with the detachable pipe body section, the fixed pipe body section is connected with the rotary sleeve, and the cutting electrode (1) extends out of or retracts into the electrode sleeve (3) from the detachable pipe body section.

3. A single body rotary electric cutter according to claim 1 or 2, wherein: the hydraulic driving system comprises a hydraulic axial linkage mechanism (14) and a hydraulic sleeve (8), a hydraulic medium (7) is arranged in the hydraulic sleeve (8), and the hydraulic axial linkage mechanism (14) is respectively matched with the electrode rod (2) and the hydraulic medium (7).

4. The one-piece rotary electric cutter according to claim 3, wherein: the hydraulic axial linkage mechanism (14) comprises a connecting rod (141), a sliding sheet (142) arranged on the electrode rod (2) and a piston arranged at one end of the hydraulic sleeve (8), and the piston is connected with the sliding sheet (142) through the connecting rod (141).

5. The one-piece rotary electrical cutter according to claim 4, wherein: and a sliding block is arranged on the sliding sheet (142), and the sliding block is matched with an axial sliding groove arranged in the electrode sleeve (3).

6. The one-piece rotary electric cutter according to claim 4, wherein: the hydraulic driving system further comprises a pressure regulating trigger (11), the pressure regulating trigger (11) comprises a pressure cap (1101), a pressure rod (1102) and a pressing block (1103), the pressing block (1103) is arranged at the other end of the hydraulic sleeve (8), the pressure cap (1101) is respectively connected with one end of the pressure rod (1102) and a spring arranged on the outer side of the corresponding end of the hydraulic sleeve (8), and the other end of the pressure rod (1102) is connected with the pressing block (1103); or the pressure regulating trigger (11) comprises a pressure cap (1101) and a pressing block (1103), the pressing block (1103) is arranged at the other end of the hydraulic sleeve (8), and the inner side face of the pressure cap (1101) is attached to the hydraulic sleeve (8).

7. A one-piece rotary electric cutter as claimed in claim 4, 5 or 6, wherein: the hydraulic driving system further comprises a handle (10), the supporting sleeve (9) is connected with the handle (10), the hydraulic sleeve (8) extends towards the handle (10) and the rotating sleeve from the inside of the supporting sleeve (9) respectively, one end of the hydraulic sleeve (8) is fixed in the rotating sleeve, and the other end of the hydraulic sleeve is fixed on the handle (10).

8. A single body rotary electric cutter according to claim 1 or 2, wherein: the rotary sleeve comprises a front sleeve body (4) and a rear sleeve body (6) which are connected with each other, a threading hole communicated with the electrode sleeve (3) is formed in the front sleeve body (4), a threaded hole plug (15) is arranged in the threading hole, and a driving plate is arranged on the rear sleeve body (6).

9. A single body rotary electric cutter according to claim 1 or 2, wherein: the supporting sleeve (9) is provided with a bearing (13), and the rotating sleeve is connected with the supporting sleeve (9) through the bearing (13).

10. A single body rotary electric cutter according to claim 1 or 2, wherein: the cutting electrode (1) is needle-shaped, annular or hook-shaped.

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