CN218105987U - Vena cava separating forceps for cardiac minimally invasive surgery - Google Patents
Vena cava separating forceps for cardiac minimally invasive surgery Download PDFInfo
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- CN218105987U CN218105987U CN202221506201.5U CN202221506201U CN218105987U CN 218105987 U CN218105987 U CN 218105987U CN 202221506201 U CN202221506201 U CN 202221506201U CN 218105987 U CN218105987 U CN 218105987U
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- vena cava
- forceps
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- 238000002324 minimally invasive surgery Methods 0.000 title description 8
- 230000000747 cardiac effect Effects 0.000 title description 5
- 238000005452 bending Methods 0.000 claims abstract description 32
- 238000007675 cardiac surgery Methods 0.000 claims abstract description 19
- 210000000078 claw Anatomy 0.000 claims description 9
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 18
- 238000000926 separation method Methods 0.000 abstract description 14
- 241000521257 Hydrops Species 0.000 abstract description 11
- 206010030113 Oedema Diseases 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 210000001519 tissue Anatomy 0.000 description 12
- 208000032843 Hemorrhage Diseases 0.000 description 6
- 230000000740 bleeding effect Effects 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008733 trauma Effects 0.000 description 2
- 208000002330 Congenital Heart Defects Diseases 0.000 description 1
- 208000025584 Pericardial disease Diseases 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 238000013132 cardiothoracic surgery Methods 0.000 description 1
- 208000028831 congenital heart disease Diseases 0.000 description 1
- 208000024348 heart neoplasm Diseases 0.000 description 1
- 208000018578 heart valve disease Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000031225 myocardial ischemia Diseases 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model relates to the technical field of medical auxiliary instruments, in particular to vena cava separating forceps for minimally invasive cardiac surgery, which comprises a forceps base, a movable handle, a fixed handle, a forceps rod, a bending part, a working head, a control button, a connector and a connecting button, wherein the forceps head of the working head is controlled to open and close by controlling the movable handle to separate vena cava; the bending angle of the bending part is adjusted by rotating the control button, so that the work of bending the clamp rod is realized, the back wall of the vena cava is more fully dissociated, the vena cava separation efficiency is improved, and the work load of medical staff is reduced; when hydrops or unnecessary bloody water suction is needed to be carried out, the connector is controlled to enable the negative pressure suction tube to be pushed forward, the connector is connected with the negative pressure suction device, the negative pressure suction tube carries out the suction of the hydrops or the unnecessary bloody water, the side hole formed in the negative pressure suction tube ensures the suction effect, the blockage of the opening during the suction work is avoided, and the operation and the use of medical staff are convenient.
Description
Technical Field
The utility model relates to the technical field of medical auxiliary instruments, in particular to vena cava separating forceps for minimally invasive cardiac surgery.
Background
Cardiothoracic surgery also encompasses diseases in cardiac surgery and general thoracic surgery, and cardiac surgery to study aspects of trauma to the great vessels of the heart, pericardial disease, congenital heart disease, acquired valvular heart disease, ischemic heart disease, cardiac tumors, great vessel disease, interventional therapy techniques, surgical treatment of cardiac arrhythmias, cardiac pacing and implantable defibrillation cardioverters, dynamic cardiomyoplasty, heart, lung, and heart-lung transplants, and the like. Minimally invasive surgery, as the name implies, is minimally invasive surgery. Refers to an operation performed by using modern medical instruments such as laparoscopes, thoracoscopes and the like and related equipment. Minimally invasive surgery has the advantages that small trauma, light pain and quick recovery are the dream of every patient needing surgery, and the dream is realized by the minimally invasive surgery. At present, in a surgical operation, a main vein blood vessel and peripheral tissues are separated after extracorporeal circulation is established, so that a cuff is blocked, and a vena cava separating clamp is required to be applied.
Therefore, the vena cava separating forceps for the minimally invasive cardiac surgery are urgently needed to be capable of bending and adjusting the separating forceps rod, well sucking accumulated liquid or redundant blood, ensuring the vena cava separating effect, protecting the safety of a patient and facilitating the use of medical staff.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reasonable in design, simple structure, the operation of being convenient for, separation tong lever can be crooked adjustable, can well aspirate hydrops or unnecessary blood water, guarantee vena cava separation effect, protection patient safety, the medical staff of being convenient for use, have a vena cava separation pincers for cardiac surgery minimal access surgery of good practicality, security, validity.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
a vena cava separating forceps for minimally invasive cardiac surgery is characterized in that: the multifunctional pliers comprise pliers seats, movable handles, fixed handles, pliers rods, bending portions, working heads, control buttons, connectors and connecting buttons, wherein the fixed handles are fixedly connected with the pliers seats, the movable handles are slidably connected with the pliers seats, the pliers seats are provided with empty grooves for the movable handles to slide, the movable handles are rotatably connected with the fixed handles through the connecting buttons, the tops of the pliers rods are fixedly connected with the pliers seats, the bottom ends of the pliers rods are fixedly connected with the working heads, the bending portions are arranged at the bottoms of the pliers rods, the control buttons for controlling the bending portions are arranged at the upper portions of the pliers rods, negative pressure suction tubes for suction are arranged in the pliers rods, and the connectors for connecting negative pressure suction devices are arranged at the top ends of the pliers rods; when the forceps are used, the medical staff controls the movable handle to control the opening and closing of the forceps head of the working head, the vena cava is separated, the forceps head is provided with a tooth socket to increase the surface friction force at the clamping position of the forceps head and improve the effect of the separation work of the forceps head, and the outer surface of the forceps head is subjected to fillet treatment, so that the tissues of a patient are prevented from being scratched, and the internal bleeding of the tissues is reduced; the bending angle of the bending part is adjusted by rotating the control button, so that the bending work of the clamp rod is realized, the back wall of the vena cava is more fully dissociated, the vena cava separating efficiency is improved, and the work load of medical staff is reduced; when hydrops or unnecessary bloody water suction is needed to be carried out, the connector is controlled to enable the negative pressure suction tube to be pushed forward, the connector is connected with the negative pressure suction device, the negative pressure suction tube carries out the suction of the hydrops or the unnecessary bloody water, the side hole formed in the negative pressure suction tube ensures the suction effect, the blockage of the opening during the suction work is avoided, and the operation and the use of medical staff are convenient.
Preferably, the working head comprises a binding clip, a working button, a connecting rod and a main button, the binding clip and the connecting rod are both provided with two sets of bilateral symmetry, the two sets of binding clips are connected through the working button in a rotating mode, the two sets of connecting rods are connected through the main button in a rotating mode, the binding clip is connected with the connecting rod in a rotating mode, the working button is connected with a binding clip in a rotating mode, the binding clip is provided with a working line for controlling the binding clip to open and close, one end of the working line is fixedly connected with the main button, the other end of the working line is fixedly connected with a movable handle, the medical staff controls the movable handle to control the binding clip of the working head to open and close, the vena cava separating work is carried out, the movable handle is rotated under stress, the connecting rod rotates to enable the binding clips on two sides to be clamped and closed, the operation of the medical staff is facilitated, and the practicability and the effectiveness of the device are guaranteed.
Preferably, the clamping position of the binding clip is provided with a tooth groove, the outer surface of the binding clip is subjected to fillet treatment, the tooth groove is arranged on the binding clip, the surface friction force of the clamping position of the binding clip is increased, the separation work effect of the binding clip is improved, the outer surface of the binding clip is subjected to fillet treatment, the tissues of a patient are prevented from being scratched, the internal bleeding of the tissues is reduced, and the safety of the device is ensured.
As preferred, the opening part both sides of vacuum aspiration pipe are equipped with two sets of side openings, vacuum aspiration pipe and connector intercommunication, vacuum aspiration pipe and connector fixed connection, vacuum aspiration pipe and tong bar sliding connection, vacuum aspiration pipe open the side opening that has and guarantee the attraction effect, avoid attracting during operation opening part jam, guarantee the validity of device.
Preferably, the bending part is provided with two groups of control wires, one end of each control wire is fixedly connected to one end, close to the working head, of the bending part, the other end of each control wire is fixedly connected to the inner wall of the control button, the bending part is a flexible hose, the bending angle of the bending part is adjusted by rotating the control button, the bending work of the clamp rod is achieved, the rear wall of the vena cava is free more sufficiently, the vena cava separation efficiency is improved, and the work load of medical staff is relieved.
The utility model has the advantages that:
the vena cava separating forceps for the cardiac minimally invasive surgery have the advantages of reasonable design, simple structure and convenience in operation, the separating forceps rod can be bent and adjusted, hydrops or redundant blood can be well sucked, the vena cava separating effect is guaranteed, the safety of a patient is protected, the separating forceps rod is convenient to use by medical staff, and the separating forceps have excellent practicability, safety and effectiveness.
The utility model discloses a working head includes binding clip, work button, connecting rod and main button, binding clip and connecting rod all are equipped with two sets of and bilateral symmetry, and two sets of binding clips rotate through the work button to be connected, two sets of connecting rods rotate through the main button to be connected, the binding clip rotates with the connecting rod to be connected, the binding clip rotates with the tong lever to be connected, the tong lever is equipped with the work line that the control binding clip opened and shut, the one end and the main button fixed connection of work line, the other end and the swing handle fixed connection of work line, the binding clip that medical staff control movable handle controlled the work head open and shut, carry out vena cava's separating work, the swing handle atress rotates, and the connecting rod rotates makes both sides binding clip press from both sides clamp tightly closed, and the medical staff's operation of being convenient for, the clamping part of binding clip is equipped with the tooth's socket, the surface of binding clip is handled through the fillet, and the binding clip is equipped with the surperficial frictional force of increase binding clip centre gripping department, improves the effect of binding clip separating work, and the binding clip surface is handled through the fillet, avoids fish tail patient tissue internal bleeding, guarantees the security of device.
The utility model discloses an opening part both sides of vacuum aspiration pipe are equipped with two sets of side openings, vacuum aspiration pipe and connector intercommunication, vacuum aspiration pipe and connector fixed connection, vacuum aspiration pipe and claw bar sliding connection, vacuum aspiration pipe open the side opening that has and guarantee the attraction effect, avoid attracting during operation opening part jam, guarantee the validity of device.
The utility model discloses a flexion is equipped with two sets of control lines, the one end fixed connection of control line is close to working head one end in the flexion, the other end fixed connection of control line is in the inner wall of control button, the flexion is the flexible hose, through rotating the crooked angle of control button adjustment flexion, realizes making the vena cava rear wall free more abundant, improves vena cava separation efficiency, alleviates medical staff work burden.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a vena cava separating forceps for a minimally invasive cardiac surgery according to an embodiment of the present invention;
fig. 2 is a partial structural schematic view of a vena cava separating forceps for a minimally invasive cardiac surgery according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a working head of vena cava separating forceps for minimally invasive cardiac surgery according to an embodiment of the present invention;
FIG. 4 is a schematic view of the internal structure of the vena cava separating forceps for minimally invasive cardiac surgery according to the embodiment of the present invention when the working head is closed;
fig. 5 is a schematic diagram of the internal structure of a working head of a vena cava separating forceps for a minimally invasive cardiac surgery according to an embodiment of the present invention when the working head is opened;
in the drawings, the components represented by the respective reference numerals are listed below:
1. the forceps comprises a forceps base, 2 parts of a movable handle, 3 parts of a fixed handle, 4 parts of a forceps rod, 5 parts of a bending part, 6 parts of a working head, 7 parts of a control button, 8 parts of a connecting head, 9 parts of a connecting button, 10 parts of a working wire, 11 parts of a negative pressure suction tube, 101 parts of a hollow groove, 501 parts of a control wire, 601 parts of a forceps head, 602 parts of the working button, 603 parts of a connecting rod, 605 parts of a main button, 1101 parts of a side hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 1-5
A vena cava separating forceps for minimally invasive cardiac surgery is characterized in that: the multifunctional forceps comprise a forceps base 1, a movable handle 2, a fixed handle 3, a forceps rod 4, a bending portion 5, a working head 6, a control button 7, a connector 8 and a connecting button 9, wherein the fixed handle 3 is fixedly connected with the forceps base 1, the movable handle 2 is slidably connected with the forceps base 1, the forceps base 1 is provided with a hollow groove 101 for the movable handle 2 to slide, the movable handle 2 is rotatably connected with the fixed handle 3 through the connecting button 9, the top of the forceps rod 4 is fixedly connected with the forceps base 1, the bottom end of the forceps rod 4 is fixedly connected with the working head 6, the bottom of the forceps rod 4 is provided with the bending portion 5, the upper portion of the forceps rod 4 is provided with the control button 7 for controlling the bending portion 5 to bend, a negative pressure suction tube 11 for suction is arranged in the forceps rod 4, and the top end of the forceps rod 4 is provided with the connector 8 for connecting a negative pressure suction device; when the forceps are used, medical staff control the movable handle 2 to control the opening and closing of the forceps head 601 of the working head 6, the vena cava is separated, the forceps head 601 is provided with a tooth groove to increase the surface friction force at the clamping position of the forceps head 601, the separation effect of the forceps head 601 is improved, the outer surface of the forceps head 601 is subjected to fillet treatment, the tissues of a patient are prevented from being scratched, and the internal bleeding of the tissues is reduced; the bending angle of the bending part 5 is adjusted by rotating the control button 7, so that the bending work of the clamp rod 4 is realized, the back wall of the vena cava is more fully dissociated, the vena cava separating efficiency is improved, and the work burden of medical staff is reduced; when hydrops or unnecessary bloody water suction need to be carried out, the connector 8 is controlled to enable the negative pressure suction tube 11 to be pushed up in front, the connector 8 is connected with the negative pressure suction device, the negative pressure suction tube 11 carries out the suction of hydrops or unnecessary bloody water, the side hole 1101 formed on the negative pressure suction tube 11 guarantees the suction effect, the blockage of the opening of the suction work is avoided, and the operation and the use of medical staff are convenient.
The working head 6 comprises a binding clip 601, a working button 602, a connecting rod 603 and a main button 605, the binding clip 601 and the connecting rod 603 are both provided with two sets of bilateral symmetry, the two sets of binding clips 601 are rotationally connected through the working button 602, the two sets of connecting rods 603 are rotationally connected through the main button 605, the binding clip 601 is rotationally connected with the connecting rod 603, the working button 602 is rotationally connected with a binding clip 4, the binding clip 4 is provided with a working line 10 for controlling the binding clip 601 to open and close, one end of the working line 10 is fixedly connected with the main button 605, the other end of the working line 10 is fixedly connected with a movable handle 2, a medical worker controls the movable handle 2 to control the binding clip 601 of the working head 6 to open and close, the vena cava is separated, the movable handle 2 is forced to rotate, the connecting rod 603 rotates to clamp and close the binding clips 601 at two sides, so that the operation of the medical worker is facilitated, and the practicability and effectiveness of the device are ensured.
The centre gripping department of binding clip 601 is equipped with the tooth's socket, the surface of binding clip 601 is handled through the fillet, and binding clip 601 is equipped with the surperficial frictional force of tooth's socket increase binding clip 601 centre gripping department, improves the effect of binding clip 601 separation work, and binding clip 601 surface is handled through the fillet, avoids fish tail patient's tissue, reduces the internal hemorrhage of tissue, guarantees the security of device.
The opening part both sides that the negative pressure attracts pipe 11 are equipped with two sets of side openings 1101, the negative pressure attracts pipe 11 and connector 8 intercommunication, negative pressure attracts pipe 11 and connector 8 fixed connection, negative pressure attracts pipe 11 and 4 sliding connection of tong pole, and the negative pressure attracts pipe 11 to open the side opening 1101 that has and guarantees the effect of attracting, avoids attracting during operation opening part jam, guarantees the validity of device.
The flexion 5 is equipped with two sets of control lines 501, the one end fixed connection of control line 501 is close to working head 6 one end in flexion 5, the other end fixed connection of control line 501 is in the inner wall of control button 7, flexion 5 is the flexible hose, adjusts the 5 bending angle of flexion through rotating control button 7, realizes the work of 4 bendings of tong pole, makes the vena cava rear wall free more abundant, improves vena cava separation efficiency, alleviates medical staff work burden.
The working principle is as follows:
when the vena cava separating forceps for cardiac minimally invasive surgery are used, medical staff control the movable handle 2 to control the opening and closing of the forceps head 601 of the working head 6, and then vena cava separating work is carried out, the forceps head 601 is provided with tooth grooves to increase the surface friction force at the clamping position of the forceps head 601, the separating work effect of the forceps head 601 is improved, the outer surface of the forceps head 601 is subjected to round angle treatment, the tissues of a patient are prevented from being scratched, and internal bleeding of the tissues is reduced; the bending angle of the bending part 5 is adjusted by rotating the control button 7, so that the work of bending the clamp rod 4 is realized, the back wall of the vena cava is more fully dissociated, the vena cava separation efficiency is improved, and the work load of medical staff is reduced; when hydrops or unnecessary bloody water suction need to be carried out, the connector 8 is controlled to enable the negative pressure suction tube 11 to be pushed up in front, the connector 8 is connected with the negative pressure suction device, the negative pressure suction tube 11 carries out the suction of hydrops or unnecessary bloody water, the side hole 1101 formed on the negative pressure suction tube 11 guarantees the suction effect, the blockage of the opening of the suction work is avoided, and the operation and the use of medical staff are convenient.
To sum up, the utility model relates to a vena cava separating forceps for cardiac surgery minimal access surgery reasonable in design, simple structure, the operation of being convenient for, the separation claw beam can be crooked adjustable, can well aspirate hydrops or unnecessary blood and water, guarantee vena cava separation effect, protection patient safety, the medical staff of being convenient for use, have good practicality, security, validity.
In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A vena cava separating forceps for minimally invasive cardiac surgery is characterized in that: including pincers seat (1), movable handle (2), fixed handle (3), claw beam (4), flexion (5), working head (6), control button (7), connector (8), connection button (9), fixed handle (3) and pincers seat (1) fixed connection, movable handle (2) and pincers seat (1) sliding connection, pincers seat (1) is equipped with supplies movable handle (2) gliding dead slot (101), movable handle (2) rotate with fixed handle (3) through connecting button (9) and are connected, claw beam (4) top and pincers seat (1) fixed connection, the bottom and the working head (6) fixed connection of claw beam (4), the bottom of claw beam (4) is equipped with flexion (5), the upper portion of claw beam (4) is equipped with control button (7) that are used for controlling flexion (5) crooked, be equipped with the suction pipe (11) that are used for the suction in claw beam (4), the top of negative pressure claw beam (4) is equipped with suction pipe (8) that are used for connecting the negative pressure suction device.
2. The vena cava separating forceps for minimally invasive cardiac surgery according to claim 1, wherein: the working head (6) comprises a tong head (601), working buttons (602), a connecting rod (603) and a main button (605), the tong head (601) and the connecting rod (603) are arranged symmetrically left and right, the two groups of tong heads (601) are rotationally connected through the working buttons (602), the two groups of connecting rods (603) are rotationally connected through the main button (605), the tong head (601) is rotationally connected with the connecting rod (603), the working buttons (602) are rotationally connected with the tong rod (4), the tong rod (4) is provided with a working line (10) for controlling the opening and closing of the tong head (601), one end of the working line (10) is fixedly connected with the main button (605), and the other end of the working line (10) is fixedly connected with the movable handle (2).
3. The vena cava separating forceps for minimally invasive cardiac surgery according to claim 2, wherein: the clamping position of the clamp head (601) is provided with a tooth groove, and the outer surface of the clamp head (601) is subjected to fillet treatment.
4. The vena cava separating forceps for minimally invasive cardiac surgery according to claim 1, wherein: the opening part both sides of vacuum aspiration pipe (11) are equipped with two sets of side openings (1101), vacuum aspiration pipe (11) and connector (8) intercommunication, vacuum aspiration pipe (11) and connector (8) fixed connection, vacuum aspiration pipe (11) and tong pole (4) sliding connection.
5. The vena cava separating forceps for minimally invasive cardiac surgery according to claim 1, wherein: the bending portion (5) is provided with two groups of control wires (501), one end of each control wire (501) is fixedly connected to one end, close to the working head (6), of the bending portion (5), the other end of each control wire (501) is fixedly connected to the inner wall of the control button (7), and the bending portion (5) is a bendable hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221506201.5U CN218105987U (en) | 2022-06-15 | 2022-06-15 | Vena cava separating forceps for cardiac minimally invasive surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221506201.5U CN218105987U (en) | 2022-06-15 | 2022-06-15 | Vena cava separating forceps for cardiac minimally invasive surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218105987U true CN218105987U (en) | 2022-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221506201.5U Expired - Fee Related CN218105987U (en) | 2022-06-15 | 2022-06-15 | Vena cava separating forceps for cardiac minimally invasive surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218105987U (en) |
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2022
- 2022-06-15 CN CN202221506201.5U patent/CN218105987U/en not_active Expired - Fee Related
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Granted publication date: 20221223 |