Lasso device for taking out broken instruments in root canal

Abstract

The utility model relates to the field of dental medical instruments, in particular to a lasso device for taking out a broken instrument in a root canal, which comprises a handle sleeve, a clamping assembly, a connector and a lasso assembly, one end of the handle sleeve is provided with an open groove, and the clamping assembly for clamping a lasso wire is arranged in the handle sleeve. A sliding button fixedly connected to the clamping assembly is located in an open groove of the handle sleeve, the clamping assembly can move in the handle sleeve along a straight line in a two-way mode by pushing the sliding button so as to control the size of the lantern ring, one end of the connector is inserted into a sleeve seat of the lasso assembly, and the other end of the connector is inserted into the open groove end of the handle sleeve to be connected with the open groove end of the handle sleeve. The direction of the sleeve ring is adjustable, the sleeve can be pre-bent, operation under a microscope is facilitated, the clamping assembly is installed rapidly, the clamping lasso wire is fastened, and the device is suitable for taking broken instruments clamped and locked tightly in a root canal.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of dental medical instruments, more specifically to a broken instrument taking out lasso device in root canal. BACKGROUND

[0002] Root canal treatment is one of the most common operations in stomatology. During the root canal treatment, the pulp needle is used to pull out the dental pulp, the root canal file (manual stainless steel root canal file or machine nickel-titanium file) is used to enter the root canal to remove the infected substances in the root canal, and the root canal space is expanded to prepare for the subsequent use of root canal irrigants for root canal disinfection and the use of root filling paste and gutta-percha point root canal filling. Due to improper use or metal fatigue, sometimes the instrument will break in the root canal. At this time, in order to not affect the subsequent root canal treatment, it may be necessary to try to remove the broken instrument in the root canal. The usual method is to use an ultrasonic working tip under a microscope to vibrate counterclockwise around the exposed instrument break end to shake off the broken instrument, but this method is not effective for the broken instrument that is stuck tightly and long, and may not be able to be removed, or even may be broken again and pushed out of the root tip. In view of this problem, the existing broken instrument taking out device technical solutions are mainly divided into "sleeve-drill", "lasso" and "micro clamp", among which the "sleeve-drill" scheme needs to prepare a series of sleeves and drills of different sizes for broken instruments of different sizes. Since the sleeve needs to be thicker than the broken instrument, the sleeve blocks the line of sight under the microscope when the instrument is taken out, resulting in a low success rate. The "micro clamp" scheme has limited clamping force due to the small size of the clamp head, and is not suitable for taking out the broken instrument that is stuck tightly. The existing "lasso" technical solution has the advantages of good operation field of view and large clamping force, but has the problems of complex device structure and complex and time-consuming installation and replacement of the lasso wire. For example, the invention with the announcement number CN15105230B has a sleeve and a lasso wire fixed by lock nuts, and the sleeve seat, fixed mounting seat, return spring and push transmission block need to be installed in sequence when installing the adjustable installation assembly, so the lasso installation and replacement is time-consuming. SUMMARY

[0003] To solve the above technical problems, the utility model provides a broken instrument taking out lasso device in root canal.

[0004] The utility model discloses a technical scheme as follows: a root canal broken instrument taking-out lasso device, including handle sleeve, clamping assembly, connector and lasso assembly, handle sleeve one end is provided with the slot, is provided with the clamping assembly for clamping lasso silk in handle sleeve, the fixed connection of clamping assembly on the slide button is located in the slot of handle sleeve, can make clamping assembly in handle sleeve along linear bidirectional movement through the slide button to control the size of the thimble, the one end of connector inserts into the sleeve seat of lasso assembly, and the other end is inserted into the connected groove end of handle sleeve, and the connector is provided with the edge curl and observation window in the side of being connected with handle sleeve, and the space is provided with spring between the connector and sleeve seat, the clamping head and the inner taper of connector, and the clamping head and the inner taper of connector are morse taper connection.

[0005] Further, the lasso assembly includes a lasso wire, a sleeve, and a sleeve seat. The lasso wire is folded in half, and the two free ends pass through one end of the sleeve. The lasso wire is clamped and fixed on the clamping assembly through the intermeshing tooth patterns on the clamping head. The middle part of the lasso wire extends out of the other end of the sleeve to form a thimble. The thimble end of the sleeve is provided with two inclined angles for limiting the rotation of the thimble.

[0006] Further, the clamping assembly includes a clamping head, a pivot, a clamping arm, and a locking cap. The clamping head and the clamping arm are integrally formed. The two clamping head-clamping arm combinations are hinged through the pivot. The opening and closing of the clamping arm complete the loosening and clamping of the clamping head. The clamping arm is provided with two recesses for installing damping rubber rings. One clamping arm is fixedly connected with a slide button for sliding the clamping assembly in the handle sleeve. The end of the clamping arm away from the clamping head is connected with the locking cap. One clamping arm is provided with a locking latch, and the other clamping arm is provided with a screw seat. The locking latch and the locking cap cooperate to lock the two clamping arms to prevent the clamping head from loosening.

[0007] Further, the surface of the locking cap is provided with anti-slip patterns. The inner diameters of the two ends of the locking cap are different. The inner walls of the two ends with different inner diameters form a locking cap step in the middle part of the locking cap. The end with the smaller inner diameter of the locking cap is connected with the clamping arm step. The screw passes through the end with the larger inner diameter and is connected with the screw seat on the clamping arm through threads. The space surrounded by the screw head, the locking cap step, the inner wall of the locking cap, and the screw seat is provided with a spring. The spring is in a compressed state to maintain the locking state of the locking cap connected with the clamping arm step.

[0008] The utility model has the advantages of simple structure, convenient use, and the following: 1. During work, first insert the connector into the sleeve seat. Fold the lasso wire in half, and pass the two free ends through the sleeve and the sleeve seat. Observe the position of the free end of the lasso wire through the observation window provided on the connector. Use the clamping head to clamp and lock the two free ends of the lasso wire. Install the damping rubber ring. Insert the clamping head into the inner taper of the connector. Install the handle sleeve. Slide the slide button of the clamping assembly into the slot of the sleeve. Adjust the size of the thimble by adjusting the position of the slide button. Rotate the sleeve seat to rotate the thimble to the appropriate position. After pre-bending the sleeve, it can be used. The installation process is simple and fast, which can save valuable clinical operation time.

[0009] 2、The tooth patterns that are engaged with each other on the clamping head can firmly clamp the lasso wire, the connecting mode of the lasso wire and the clamping assembly is convenient for quickly installing and replacing the lasso wire, and is firm in connection and suitable for taking the broken instrument, two sets of devices can be prepared in clinic, one set is used by a doctor during operation, and a nurse installs another set, so that the broken instrument is conveniently replaced after the taking and breaking operation fails to continue to try.

[0010] 3、The direction of the sleeve ring is fixed by the inclined angles of the two sides of the sleeve, the direction of the sleeve ring can be adjusted by rotating the sleeve seat, the sleeve can be pre-bent in the direction designed in advance, direct vision operation under a microscope is facilitated, and meanwhile, the sleeve is facilitated to extend to the side of the broken instrument to sleeve the sleeve ring.

[0011] 4、The connecting head in the parts of the utility model can be stamped into shape, the sleeve-sleeve seat can even be replaced by a syringe needle, only the clamping assembly needs to be turned and machined by a lathe, and the overall production cost is low, so that mass production is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structure schematic diagram of the utility model in an installed state.

[0013] Figure 2 is a schematic diagram of the utility model in a disassembled state.

[0014] Figure 3 is a top view of the sleeve ring sleeve in an installed state.

[0015] Figure 4 is a side view of the sleeve ring sleeve in an installed state.

[0016] Figure 5 is an axial sectional view of the locking cap.

[0017] Figure 6 is a schematic diagram of the clamping assembly in a loosened state.

[0018] Figure 7 is a schematic diagram of the clamping assembly in a loosened state.

[0019] Reference numerals: 1-Handle sleeve, 1.1-Slotted, 2-Clamping assembly, 2.1-Clamping head, 2.2-Rotating shaft, 2.3-Clamping arm, 2.4-Groove, 2.5-Slide button, 2.6-Locking cap, 2.6 / 1-Screw, 2.6 / 2-Spring, 2.6 / 3-Clamping arm step, 2.6 / 4-Screw seat, 2.6 / 5-Locking latch, 2.6 / 6-Anti-slip texture, 2.6 / 7-Locking cap step, 2.7-Damping rubber ring, 2.8-Toothed, 3-Lasso assembly, 3.1-Lasso ring, 3.2-Sleeve, 3.3-Sleeve seat, 3.4-Lasso wire, 3.5-Angle, 4-Connector, 4.1-Curled edge, 4.2-Observation window, 4.3-Connector inner cone, 5-Breaking instrument, 6-Root tube wall. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Example 1: As Figures 1 to 6 As shown, this embodiment provides a ligature device for removing broken instruments from an intracanal, including a handle sleeve 1, a clamping assembly 2, a connector 4, and a ligature assembly 3. One end of the handle sleeve 1 is provided with a slot 1.1, and the clamping assembly 2 for clamping the ligature wire 3.4 is provided inside the handle sleeve 1. A sliding button 2.5 fixedly connected to the clamping assembly 2 is located in the slot 1.1 of the handle sleeve 1. By pushing the sliding button 2.5, the clamping assembly 2 can move bidirectionally in a straight line inside the handle sleeve 1, thereby controlling the size of the ligature 3.1. One end of the connector 4 is inserted into the cannula seat 3.3 of the ligature assembly 3, and the other end is inserted and connected to the slot 1.1 end of the handle sleeve 1. The connector 4 is provided with a rolled edge 4.1 and an observation window 4.2 on the side connected to the handle sleeve 1. The connection between the connector 4 and the cannula seat 3.3, and between the clamping head 2.1 and the inner cone 4.3 of the connector 4, is a Morse taper connection.

[0023] The lasso assembly 3 includes a lasso wire 3.4, a sleeve 3.2 and a sleeve seat 3.3, the lasso wire 3.4 is folded and the two free ends are inserted into the sleeve, the lasso wire 3.4 is fixed on the clamping assembly 2 by the interlocking tooth 2.8 on the clamping head 2.1, the middle part of the lasso wire 3.4 extends out of the other end of the sleeve 3.2 to form a loop 3.1, and the loop end of the sleeve 3.2 is provided with two bevels 3.5 for limiting the rotation of the loop 3.1.

[0024] The clamping assembly 2 includes a clamping head 2.1, a rotating shaft 2.2, a clamping arm 2.3 and a locking cap 2.6, the clamping head 2.1 is integrally formed with the clamping arm 2.3, the two clamping head 2.1-clamping arm 2.3 combination is hinged through the rotating shaft 2.2, the loosening and clamping of the clamping head 2.1 is completed by the opening and closing of the clamping arm 2.3, the clamping arm 2.3 is provided with two recesses 2.4 for installing damping rubber rings 2.7, one clamping arm 2.3 is fixedly connected with a sliding button 2.5 for pushing the clamping assembly 2 to slide in the handle sleeve 1, the end of the clamping arm 2.3 away from the clamping head 2.1 is connected with the locking cap 2.6, one clamping arm 2.3 is provided with a locking latch 2.6 / 5, and the other clamping arm 2.3 is provided with a screw seat 2.6 / 4, the locking latch 2.6 / 5 cooperates with the locking cap 2.6 to lock the two clamping arms 2.3 to prevent the clamping head 2.1 from loosening.

[0025] The surface of the locking cap 2.6 is provided with anti-skid lines 2.6 / 6, the inner diameters of the two ends of the locking cap 2.6 are different, the inner walls of the two ends with different inner diameters form a locking cap step 2.6 / 7 in the middle part of the locking cap 2.6, the end with smaller inner diameter of the locking cap 2.6 is connected with the clamping arm step 2.6 / 3, the screw 2.6 / 1 passes through the end with larger inner diameter and is connected with the screw seat 2.6 / 4 on the clamping arm 2.3 through threads, the head of the screw 2.6 / 1, the locking cap step 2.6 / 7, the inner wall of the locking cap 2.6 and the screw seat 2.6 / 4 surround a space in which a spring 2.6 / 2 is arranged, the spring 2.6 / 2 is in a compressed state for maintaining the locking state of the locking cap 2.6 connected with the clamping arm step 2.6 / 3.

[0026] The device is used, first, the connector 4 is inserted into the sleeve seat 3.3, the lasso wire 3.4 is folded and the two free ends are passed through the sleeve 3.2 and the sleeve seat 3.3, the position of the free end of the lasso wire 3.4 can be observed through the observation window 4.2 provided on the connector 4, which facilitates the connection of the lasso wire 3.4 with the clamping head 2.1. The connector edge 4.1 can assist in disassembling the connector, in addition, it prevents the sharp edge from scratching the glove or the corner of the patient's mouth. Pull the locking cap 2.6 away from the clamping head 2.1, the locking latch 2.6 / 5 is released from the locking cap 2.6, so that the clamping arm 2.3 and the clamping head 2.1 are loosened, pinch the clamping arm 2.3, so that the clamping head 2.1 clamps the two free ends of the lasso wire 3.4, pull the locking cap 2.6 to lock the locking latch 2.6 / 5, to ensure that the clamping arm 2.3 and the clamping head 2.1 are not loosened, install two damping rubber rings 2.7, so that the clamping assembly 2 has appropriate resistance when sliding in the handle sleeve 1, insert the clamping head 2.1 into the connector inner taper 4.3, at this time the sleeve ring is larger, in order to facilitate installation, the clamping assembly 2 can be erected to prevent it from falling off the connector inner taper 4.3, install the handle sleeve 1, so that the clamping assembly 2 slides the knob 2.5 into the sleeve slot 1.1, adjust the position of the knob 2.5 to adjust the size of the sleeve ring 3.1 to the appropriate size, rotate the sleeve seat 3.3 to rotate the sleeve ring 3.1 to the appropriate position, and then use it after pre-bending the sleeve 3.2. When using, under the microscope, use the ultrasonic instrument to cut a small amount of root canal wall 6, create space on the side of the breaking instrument 5, extend the sleeve 3.2 to the side of the breaking instrument 5, let the sleeve ring 3.1 cover the breaking instrument 5, hold the handle sleeve 1 with the index finger to the little finger and the palm, push the knob 2.5 with the thumb away from the sleeve 3.2, at this time the sleeve ring 3.1 is smaller, together with the sleeve 3.2, it tightly covers the breaking instrument 5, pull out the sleeve 3.2 to take out the breaking instrument 5. It is very difficult to successfully remove the broken instrument in one try in clinical practice, and the broken instrument often slips out of the sleeve ring. In view of this situation, two sets of devices can be prepared, one set is used by the doctor and the other set is installed by the nurse, and another attempt is started immediately after the first attempt to remove the broken instrument fails.

[0027] Example 2: This example is further optimized on the basis of example 1, specifically: the lasso wire 3.4 is made of high tensile strength metal, high molecular material or high performance ceramic filament.

[0028] The sleeve 3.2 passes through the sleeve seat 3.3, which is fixed by welding or bonding, or a disposable syringe needle is used instead of the sleeve and the sleeve seat.

[0029] The handle sleeve 1, the clamping assembly 2, the connector 4, the sleeve 3.2 and the sleeve seat 3.3 can be made of stainless steel, titanium alloy or aluminum alloy material.

[0030] The clamping assembly 2 in the loose state, the clamping head 2.1 up and down light contact, two clamping arm 2.3 open a small angle, hand pinch two clamping arm 2.3 close, with the lock cap 2.6 lock latch 2.6 / 5, clamping head 2.1 clamping rope silk 3.4, because the clamping arm 2.3 than clamping head 2.1 long, at this time the clamping head 2.1, pivot 2.2 and clamping arm 2.3 form a kind of lever, clamping head 2.1 clamping rope silk 3.4 clamping force will be greater than the resilience of clamping arm 2.3, so as to ensure that the rope silk 3.4 from the clamping assembly 2.1 off.

Claims

1. A root canal intracanal broken instrument retrieval lasso device, comprising: The utility model relates to a handle sleeve (1), clamping assembly (2), connector (4) and lasso assembly (3) are included, one end of handle sleeve (1) is provided with the slot (1.1), be provided with the clamping assembly (2) for clamping lasso silk (3.4) in handle sleeve (1), the fixed connection of sliding button (2.5) on clamping assembly (2) is located in the slot (1.1) of handle sleeve (1), can make clamping assembly (2) in handle sleeve (1) along linear bidirectional movement to control the size of thimble (3.1) by pushing sliding button (2.5), one end of connector (4) inserts the sleeve seat (3.3) of lasso assembly (3) in, the other end is inserted into the connection from the slot (1.1) end of handle sleeve (1), the edge (4.1) and observation window (4.2) are set up in the side of connector (4) and handle sleeve (1) connection, and the taper connection of morrison is between connector (4) and sleeve seat (3.3), between clamping head (2.1) and the inner cone (4.3) of connector.

2. A root canal intracanal broken instrument retrieval lasso device according to claim 1, wherein, The utility model relates to a handle sleeve (1), clamping assembly (2), connector (4) and lasso assembly (3) are included, one end of handle sleeve (1) is provided with the slot (1.1), be provided with the clamping assembly (2) for clamping lasso silk (3.4) in handle sleeve (1), the fixed connection of sliding button (2.5) on clamping assembly (2) is located in the slot (1.1) of handle sleeve (1), can make clamping assembly (2) in handle sleeve (1) along linear bidirectional movement to control the size of thimble (3.1) by pushing sliding button (2.5), one end of connector (4) inserts the sleeve seat (3.3) of lasso assembly (3) in, the other end is inserted into the connection from the slot (1.1) end of handle sleeve (1), the edge (4.1) and observation window (4.2) are set up in the side of connector (4) and handle sleeve (1) connection, and the taper connection of morrison is between connector (4) and sleeve seat (3.3), between clamping head (2.1) and the inner cone (4.3) of connector.

3. A root canal intracanal broken instrument retrieval lasso device according to claim 1, wherein, The utility model relates to a handle sleeve (1), clamping assembly (2), connector (4) and lasso assembly (3) are included, one end of handle sleeve (1) is provided with the slot (1.1), be provided with the clamping assembly (2) for clamping lasso silk (3.4) in handle sleeve (1), the fixed connection of sliding button (2.5) on clamping assembly (2) is located in the slot (1.1) of handle sleeve (1), can make clamping assembly (2) in handle sleeve (1) along linear bidirectional movement to control the size of thimble (3.1) by pushing sliding button (2.5), one end of connector (4) inserts the sleeve seat (3.3) of lasso assembly (3) in, the other end is inserted into the connection from the slot (1.1) end of handle sleeve (1), the edge (4.1) and observation window (4.2) are set up in the side of connector (4) and handle sleeve (1) connection, and the taper connection of morrison is between connector (4) and sleeve seat (3.3), between clamping head (2.1) and the inner cone (4.3) of connector.

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